Add explicit package in load_contract calls

[ddoktorski]

Towards #1698

• Add explicit package= in load_contract calls where possible, especially for contracts that only exists in v2 directory to avoid relying on default behavior

[ddoktorski]

This change is part of the following stack:

• Add explicit package in load_contract calls #1718 ◀
  • Stop using sys.args logic in test #1719
    • Use new contract in test_declare_v3_tx #1720
      • Fix Windows CI tests #1721

_{Change managed by git-spice.}

[franciszekjob]

Are we always explicitly passing package in the function call? If so, do we want to keep package param optional at all?

[ddoktorski]

Are we always explicitly passing package in the function call? If so, do we want to keep package param optional at all?

Not always, e.g. https://github.com/software-mansion/starknet.py/blob/ddoktorski/fix-load-config/starknet_py/tests/e2e/contract_interaction/declare_test.py#L39