Feat/python preparation

[Jakub-Vacek]

Description

This PR updates code base to be able to add more languages in future (now adding python). PR introduces SupportedLanguages enum, these are used in application code generation and dependency definition generation.

Final project requirements (python version, dependencies) are not 100% confirmed yet, but possible use of python is hidden so this can be merged.

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have updated the documentation accordingly. For updating Oclif commands documentation use oclif-dev.
• I have read the CONTRIBUTION_GUIDE document.
• I haven't repeated the code. (DRY)
• I have added tests to cover my changes.
• All new and existing tests passed.

[kysely]

It overall looks okay 👍

Just left a comment about how we're switching between the languages because I think the current solution might be prone to introducing bugs in the future.

[kysely]

Thanks 🙏

I now it is more code but I feel like it's safer