casing: Starknet instead of StarkNet

[pscott]

Is your feature request related to a problem? Please describe.
The official casing for Starknet is not StarkNet anymore, but Starknet.
However, some occurrences of StarkNet can still be found, most notably in the TypeHash function:
https://github.com/0xs34n/starknet.js/blob/384db9f3bfaf066dea43f60e49f255c9a4a28b63/src/utils/typedData.ts#L255-L256

Describe the solution you'd like
Replace every occurence of StarkNet with Starknet

Describe alternatives you've considered
Keep StarkNet and dismiss this issue. I think it's still early enough to change to Starknet though.

Additional notes
This introduces a big breaking change (:

[0xdorifto]

Hey! Can this issue be assigned to me?

[tabaktoni]

@0xdorifto Yes feel free to take it

[0xdorifto]

@tabaktoni thanks! I'll start working on it now.

[pscott]

@0xdorifto Yes feel free to take it

should we discuss if it's worth introducing the breaking change?

[PhilippeR26]

Not sure it's still early enough to change.
Should be first validated by ArgentX, Braavos, ...

[0xdorifto]

It's up here if you guys want to check it out ^

[ivpavici]

@janek26 @dhruvkelawala @yoga-braavos can you please give your input about this? 🙏

[ivpavici]

Will probably be able to close this after this one is closed starknet-io/get-starknet#194

[PhilippeR26]

Will at the end be defined by this snip : https://community.starknet.io/t/snip-off-chain-signatures-a-la-eip712/98029#abstract-1

[tabaktoni]

Resolved in favor of the snip, for further progress push change's on the snip