Tomaszkumor/compiled class hash v2 6

[tkumor3]

Closes #1315

• Add support for declaring contract compiled with cairo 2.6

Introduced changes

• [ ] This PR contains breaking changes

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 86.11111% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 97.82%. Comparing base (67049e0) to head (019225c). Report is 3 commits behind head on development.

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1314      +/-   ##
===============================================
- Coverage        98.01%   97.82%   -0.20%     
===============================================
  Files               93       94       +1     
  Lines             4580     4728     +148     
===============================================
+ Hits              4489     4625     +136     
- Misses              91      103      +12     

Files	Coverage Δ
starknet_py/net/client_models.py	99.77% <100.00%> (+0.01%)	:arrow_up:
starknet_py/net/schemas/gateway.py	96.55% <100.00%> (+0.04%)	:arrow_up:
starknet_py/hash/casm_class_hash.py	97.95% <96.66%> (-2.05%)	:arrow_down:
starknet_py/hash/compiled_class_hash_objects.py	77.50% <77.50%> (ø)

... and 1 file with indirect coverage changes