feat: implement compiler backwards compatibility policy

[elfedy]

What 💻

• Add initial helpers and tests to implement backwards compatibility support for different zksolc versions (1.5.6 onwards). Adding a new version should add the version to ZkSolc::zksolc_supported_versions() and the latest version will be used by default. This keeps version bumping to a single field and also ensures version-aware test suite is run on this new version.
• Makes 1.5.9 explicitly not supported (due to it's suppressed/error warnings not being compatible with the imported zksolc types).
• Error if specifying an unsupported version, but emit warnings if a hardcoded path to anunsupported version of zksolc is being used.
• Fixes bytecode_hash not working on 1.5.7 and older by adding support for the new field name.
• Implement zksolc version aware sanitizing.

TODO: Specifying unsupported versions is signaled as deprecated. A PR removing the support alltogether should be made for the release that follows the one that includes this change.

Why ✋

Addresses #759

Evidence 📷

New tests pass, specifying metadata works for all supported versions.

When specifying an unsupported version:

Documentation 📚

Please ensure the following before submitting your PR:

• Check if these changes affect any documented features or workflows.
• Update the book if these changes affect any documented features or workflows.