chore(blockifier): unify get entry point for all contract classes

[meship-starkware]

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Codecov Report

Attention: Patch coverage is 27.48092% with 95 lines in your changes missing coverage. Please review.

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Files with missing lines	Patch %	Lines
crates/blockifier/src/execution/contract_class.rs	16.12%	78 Missing ⚠️
.../blockifier/src/execution/entry_point_execution.rs	75.00%	4 Missing and 1 partial ⚠️
crates/blockifier/src/execution/native/utils.rs	0.00%	5 Missing ⚠️
crates/blockifier/src/execution/execution_utils.rs	0.00%	2 Missing ⚠️
crates/papyrus_protobuf/src/converters/class.rs	0.00%	2 Missing ⚠️
crates/blockifier/src/execution/entry_point.rs	83.33%	1 Missing ⚠️
crates/blockifier/src/test_utils/contracts.rs	0.00%	1 Missing ⚠️
...ates/starknet_api/src/deprecated_contract_class.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                          Coverage Diff                          @@
##             native/add-native-execution-engine     #900   +/-   ##
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  Coverage                                      ?   74.38%           
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  Files                                         ?      367           
  Lines                                         ?    38657           
  Branches                                      ?    38657           
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  Hits                                          ?    28754           
  Misses                                        ?     7576           
  Partials                                      ?     2327           

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[meship-starkware]

Reviewable status: 0 of 14 files reviewed, 1 unresolved discussion

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crates/blockifier/src/execution/contract_class.rs line 65 at r2 (raw file):

}

#[derive(Clone)]

I am not sure an enum is the right solution here.

[meship-starkware]

Reviewable status: 0 of 14 files reviewed, 2 unresolved discussions

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crates/blockifier/src/execution/contract_class.rs line 118 at r3 (raw file):

    }

    pub fn entry_points_of_same_type(&self, entry_point_type: EntryPointType) -> Vec<EntryPoint> {

This function is a bit expensive. Also, the name is a bit confusing because ContractClass::V0() also has an entry_points_of_same_type file, and calling this function with ContractClass::V0() will result in panic.