feat(poly env): new command for build backends without support for multiple module roots or hooks - #403

Description

Adding a new command - poly env setup - for Package & Dependency management tools without support for multiple module roots or hooks. This command will add the bases and components paths to the current virtual environment.

Motivation and Context

See discussion #402

Users of uv that also use the uv build backend cannot set bases and components as module roots, or dev mode dirs as it is called in Hatch/Hatchling, because the uv build backend has no support for it. Also, his build backend has no support for hooks.

Uv build backend users can now add the needed folders into the current virtual environment by combining the uv sync command with this new command:

uv sync
uv run poly env setup

How Has This Been Tested?

✅ CI
✅ local run of the command

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 not work as expected)

Checklist:

• I have read the code of conduct.
• I have read the contributing guide.
• I have updated the documentation accordingly (if applicable).