docs: add supported language page to docs

[markmichon]

Description

• Adds a 'supported languages' page to the documentation. It exists in the github readme, but was missing from the docs.
• Adds inter-linking of resources to make moving between documents easier.

Checklist

• I've added test coverage that shows my fix or feature works as expected.
• I've updated or added documentation if required.
• I've included usage information in the description if CLI behavior was updated or added.
• PR title follows Conventional Commits format