chore: include functions-py into monorepo

[o-santi]

What kind of change does this PR introduce?

More functions-py into the monorepo.

Additional context

I believe the check list for moving both this project and the next ones should be roughly the following:

• Add it as an entry to the workspace in pyproject.toml
• Copy the relevant files to src/{project_name} (including CHANGELOG.md, LICENSE and Makefile!)
• Use the package directly from workspace in src/supabase, instead of from pypi.
• Add its tests to the main Makefile, and the directory itself to make publish.
• For projects using unasync-cli, switch away from it.
• Add it to main README.md

[coveralls]

Pull Request Test Coverage Report for Build 17073102455

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+2.5%) to 90.714%

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Totals
Change from base Build 17044247007:	2.5%
Covered Lines:	2032
Relevant Lines:	2240

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💛 - Coveralls

[silentworks]

This should probably be updated to match the mono repo setup