Fully automate docs, examples, and i18n updates.

[itsTheFae]

In an ideal situation, some parts of the docs, example files, and i18n files should be updated by workflows.
Currently MusicBot has a command line method to automate example files, and some tools which could automate i18n extractions / updates.
The one part still missing is automation for the docs!

We should come up with workflow(s) that could get these parts automated:

• - Auto-extract strings, to update POT and PO files. (Does not include actually translating extractions!)
• - Auto-update example config and permissions files. (Done via --mk-examples CLI flag)
• - Auto-update the following docs from sources:
  (Make a CLI flag from the makemarkdown command, but also keep show/hide layout)
  • - Commands and usage lists.
  • - Configuration listing.
  • - Permissions listing.
• - The workflow(s) that get these all done.