To build Bitcoin-native experience.

Pass only bitcoin address to initialize the deposit process. Using
`@orangekit/sdk` we calculate the Ethereum address based on the Bitcoin
address. This created Ethereum address of the Safe should be used to
show the user's data like position, transaction history and activity
details.

To get the bitcoin address for `x'/0'/0'/0/0` path of a given extended
public key to use always the same bitocin address as an identifier
because Leder Wallet API returns the "next" public address where a user
should receive funds. In the context of Bitcoin, the address is
"renewed" each time funds are received. We need to use the same bitcoin
address to generate always the same deposit owner address on ethereum.

We want to define an interface for communication with Bitcoin wallet and
use it in Acre SDK. Currently it defines `getAddress` function because
we need the bitcoin address to initialize the deposit.

Implements the `getAddress` function which always returns the same
bitcoin address based on the extended public key.

Use mixin pattern to share abstract logic but for different base
classes.

We want to relay on the `BitcoinProvider` implementation to get the
bitcoin address because different wallets use different strategies. For
example in Ledger Live the address is "renewed" each time funds are
received in order to allow some privacy. In that case always getting the
same bitcoin address is hidden under a given implementation.

Cover a case when the custom bitcoin recovery address is passed to
initialize deposit.

Explain in the docs that this property is available to let the consumer
use `P2SH-P2WPKH` as the deposit owner and another tBTC-supported type
(`P2WPKH`, `P2PKH`) address as the tBTC Bridge recovery address.

`depositor` -> `depositorOwnerBitcoinAddress` - let's avoid `naming it
`depositor` so we don't confuse it with the `BitcoinDepositor` contract.

According to the [jest
documentation](https://jestjs.io/docs/getting-started#using-typescript)
there are two ways to get TypeScript to work with Jest:
- babel
- ts-jest

We already use ts-jest preset in jest configuration, so we don't need to
import babel presets.

We use the JestConfigWithTsJest type to be explicit about the type of
the config object we're dealing with.

After we added @orangekit/sdk import Jest started to complain with:
```
Jest encountered an unexpected token

Details:

/Users/jakub/workspace/acre/acre/node_modules/.pnpm/@orangekit[email protected]/node_modules/@orangekit/sdk/dist/src/index.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){export * from "./lib";
                                                                                  ^^^^^^

SyntaxError: Unexpected token 'export'

> 1 | import { OrangeKitSdk } from "@orangekit/sdk"
    | ^
  2 | import { JsonRpcProvider } from "ethers"
  3 | import { AcreContracts } from "./lib/contracts"
  4 | import { EthereumNetwork, getEthereumContracts } from "./lib/ethereum"

  at Runtime.createScriptFromCode (../node_modules/.pnpm/[email protected]/node_modules/jest-runtime/build/index.js:1505:14)
  at Object.<anonymous> (src/acre.ts:1:1)
  at Object.<anonymous> (src/index.ts:9:1)
  at Object.<anonymous> (test/modules/tbtc/Tbtc.test.ts:7:1)
```

The `@orangekit/sdk` module exports `dist/` directory containing JS files in ESM syntax.
Jest doesn't support ESM syntax, so we have to convert these JS files to
CommonJS syntax with `ts-jest/presets/js-with-ts` preset.
We have to define `transformIgnorePatterns` property as `node_modules/`
directory is excluded from transformations by default.

We also had to add `allowJs: true` in tsconfig.json to support
transformation of JS files.

Reference:
- https://stackoverflow.com/questions/75452411/why-isnt-jest-handling-es-module-dependencies
- https://stackoverflow.com/questions/49263429/jest-gives-an-error-syntaxerror-unexpected-token-export?noredirect=1&lq=1

Depends on: #417

After we added @orangekit/sdk import Jest started to complain with:
```
Jest encountered an unexpected token

Details:

/Users/jakub/workspace/acre/acre/node_modules/.pnpm/@orangekit[email protected]/node_modules/@orangekit/sdk/dist/src/index.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){export * from "./lib";
                                                                                  ^^^^^^

SyntaxError: Unexpected token 'export'

> 1 | import { OrangeKitSdk } from "@orangekit/sdk"
    | ^
  2 | import { JsonRpcProvider } from "ethers"
  3 | import { AcreContracts } from "./lib/contracts"
  4 | import { EthereumNetwork, getEthereumContracts } from "./lib/ethereum"

  at Runtime.createScriptFromCode (../node_modules/.pnpm/[email protected]/node_modules/jest-runtime/build/index.js:1505:14)
  at Object.<anonymous> (src/acre.ts:1:1)
  at Object.<anonymous> (src/index.ts:9:1)
  at Object.<anonymous> (test/modules/tbtc/Tbtc.test.ts:7:1)
```

The `@orangekit/sdk` module exports `dist/` directory containing JS
files in ESM syntax.
Jest doesn't support ESM syntax, so we have to convert these JS files to
CommonJS syntax with `ts-jest/presets/js-with-ts` preset.
We have to define `transformIgnorePatterns` property as `node_modules/`
directory is excluded from transformations by default.

We also had to add `allowJs: true` in tsconfig.json to support
transformation of JS files.

Unfortunately, it increased test execution time, so it may be better to
mock the `@orangekit/sdk` in unit tests instead of transforming the
code.

Reference:
-
https://stackoverflow.com/questions/75452411/why-isnt-jest-handling-es-module-dependencies
-
https://stackoverflow.com/questions/49263429/jest-gives-an-error-syntaxerror-unexpected-token-export?noredirect=1&lq=1

For security reasons. In the future, we should probably fork it or copy
that we need to resolve the addresses from `xpub`.

We should avoid prefixing constructor args with `_` as it may suggest
that the argument should be ignored, but we use it.

Define two separate functions `initializeMainnet` and
`initializeTestnet` so consumers won't pass the network param
unnecessarily.

Create `VoidSigner` compatible with ethers v5. In the future we are
going to use the ethers signer from `@orangekit/sdk` under the hood.
This signer is used only interanlly by the Acre SDK to interact with
Ethereum contracts.

If there is one export we should use it as default.

Reverts 553b5be commit. We can just
mock the `@orangekit/sdk` module globally to run jest tests correctly
w/o converting the JS files to CommonJS syntax.

Depends on: #371

This PR removes the Ethereum account from the dapp context to implement
Bitcoin native experience. Since the signing Bitcoin messages doesn't
work in the Ledger Live Wallet API we temporarily removed this step from
the deposit flow.

Remove unnecessary `ETHEREUM_NETWORK` param. The ethereum network is no
longer needed to create the Acre SDK.

`ethereumAddress` -> `depositOwnerEvmAddress`

Fix docs for the `bitcoinProvider` property.

Extends the `Signer` interface from ethers v6 to include more methods
required by ethers v5.

Instead of exporting the BitcoinNetwork we import from tBTC SDK we
define it with the networks we support - mainnet and testnet.

Remove the `initializeMainnet` and `initializeTestnet` static functions
and keep only one function `initialize` and the consumer must pass
bitcoin network to which it wants to connect. This simplifies the
initialization in the dapp.

To improve the readability.

This is just a temporary interface that should be replaced by the
`OrangeKitBitcoinWalletProvider` from the `orangekit` library.