Adding python support and hello world example

[afrueda97]

Proposal for the Python example.

[anfelbar]

It looks good so far. Now please continue with the example until you can successfully execute bazel run //python:python. It should show hello world. We will continue working in this PR.

[afrueda97]

Thanks Andrés,
Strange things happening with the editor, the files weren't empty locally.

Should be runnable now!

[anfelbar]

Please add the directory to the CI workflow builds as the other languages do in .github/workflows/main.yml

[anfelbar]

In your current branch please do:

git fetch
git merge origin/main

Then fix the conflicts, commit and push again to this branch.

[anfelbar]

You should merge this.