Split RPC schemas into multiple files

[kkawula]

Closes #1316

Introduced changes

• rpc.py spilted into 5 files transctions.py trace_api.py block.py contract.py event.py

TODO

• This PR contains breaking changes

• Move schemas from gateway.py to rpc.py

• Split schemas from rpc.py to other files in rpc directory

• Rename CompiledContract, ContractClass and ContractClassSchema to DeprecatedCompiledContract, DeprecatedContractClass and DeprecatedContractClassSchema

[codecov]

Codecov Report

Attention: Patch coverage is 98.31144% with 9 lines in your changes missing coverage. Please review.

Project coverage is 87.57%. Comparing base (2ad5d45) to head (66b367e).
Report is 1 commits behind head on development.

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1385      +/-   ##
===============================================
- Coverage        96.64%   87.57%   -9.07%     
===============================================
  Files               95      101       +6     
  Lines             5005     5079      +74     
===============================================
- Hits              4837     4448     -389     
- Misses             168      631     +463     

Files	Coverage Δ
starknet_py/net/full_node_client.py	91.90% <100.00%> (+3.55%)	⬆️
starknet_py/net/schemas/broadcasted_txn.py	96.29% <100.00%> (ø)
starknet_py/net/schemas/gateway.py	94.66% <100.00%> (-1.89%)	⬇️
starknet_py/net/schemas/rpc/trace_api.py	99.23% <99.23%> (ø)
starknet_py/net/schemas/rpc/contract.py	97.56% <97.56%> (ø)
starknet_py/net/schemas/rpc/block.py	96.80% <96.80%> (ø)
starknet_py/net/schemas/rpc/transactions.py	98.63% <98.63%> (ø)

... and 58 files with indirect coverage changes

[ddoktorski]

Good job 💪

I've left a few comments. In addition to those, let's also update the migration guide with the information about renamed classes (CompiledContract and ContractClass).

[ddoktorski]

LGTM