Add Soroban operations to Stellar docs (#222)

* Incorporate Soroban into the Stellar docs

- Add three Soroban operations
- Add Soroban to encyclopedia
- Add Soroban RPC to Stellar Stack

* update operations

* remove Soroban enc entry

Soroban has been pulled out to main nav

docs/fundamentals-and-concepts/list-of-operations.mdx

@@ -664,3 +664,33 @@ Learn more about liquidity pools: [Liquidity Pools Encyclopedia Entry](../encycl
 | LIQUIDITY_POOL_WITHDRAW_UNDERFUNDED | -3 | Insufficient balance for the pool shares. |
 | LIQUIDITY_POOL_WITHDRAW_LINE_FULL | -4 | The withdrawal would exceed the trustline limit for one of the assets. |
 | LIQUIDITY_POOL_WITHDRAW_UNDER_MINIMUM | -5 | Unable to withdraw enough to satisfy the minimum price. |
+
+## Invoke Host Function
+
+Invoke and deploy Soroban smart contracts with `InvokeHostFunctionOp`.
+
+The `InvokeHostFunctionOp` can be used to perform the following Soroban operations:
+
+- Invoke contract functions: `HOST_FUNCTION_TYPE_INVOKE_CONTRACT`
+- Upload Wasm of the contracts: `HOST_FUNCTION_TYPE_UPLOAD_CONTRACT_WASM`
+- Deploy new contracts using the uploaded Wasm or built-in implementations: `HOST_FUNCTION_TYPE_CREATE_CONTRACT`
+
+Note that Soroban transactions can only contain one operation per transaction.
+
+Learn more in the [Soroban docs](https://soroban.stellar.org/docs/fundamentals-and-concepts/invoking-contracts-with-transactions#invokehostfunctionop).
+
+## Bump Footprint Expiration
+
+Bump the expiration ledger of entries for Soroban smart contracts with the `BumpFootprintExpirationOp`.
+
+Note that Soroban transactions can only contain one operation per transaction.
+
+Learn more in the [Soroban docs](https://soroban.stellar.org/docs/fundamentals-and-concepts/state-expiration#bumpfootprintexpirationop).
+
+## Restore Footprint
+
+Make expired Soroban smart contract entries accessible again by restoring them with `RestoreFootprintOp`.
+
+Note that Soroban transactions can only contain one operation per transaction.
+
+Learn more in the [Soroban docs](https://soroban.stellar.org/docs/fundamentals-and-concepts/state-expiration#restorefootprintop).

docs/tools-and-sdks.mdx

@@ -69,6 +69,12 @@ Interact with the Stellar network using the SDK in your preferred language. The
 
 Each SDK has its own source code and documentation. Learn how to use a specific SDK by referring to the documentation- most docs offer practical examples that demonstrate how to construct and submit transactions and interact with Horizon endpoints.
 
+:::note
+
+Find the Soroban smart contract platform's SDKs in the [Soroban docs](https://soroban.stellar.org/docs/category/sdks).
+
+:::
+
 ### JavaScript
 
 [Source](https://github.com/stellar/js-stellar-sdk) | [Docs](https://stellar.github.io/js-stellar-sdk/)