Python/docs: add sync client docs to website

[liorsve]

This PR:

1. adds the sync client docs to the website
2. adds lua scripting guides (both for sync and async) to the docs- they were added as docs but not deployd, I added the sync version (same doc without async, await, fixed imports etc.)
3. fixes the mkdocs-deploy workflow permissions.

See result deployed already to my github pages - https://liorsve.github.io/valkey-glide/

Issue link

This Pull Request is linked to issue: #3285

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one issue.
• Commit message has a detailed description of what changed and why.
• Tests are added or updated.
• CHANGELOG.md and documentation files are updated.
• Destination branch is correct - main or release
• Create merge commit if merging release branch into main, squash otherwise.

[shohamazon]

why?

[liorsve]

Otherwise the workflow fails, because we try to push to a branch. This permissions section was added after after we deployed the website, and we never deployed after it was added. Was supposed to be added with write permissions from the beginning.

[shohamazon]

got it

[shohamazon]

🐶