Marko 6 is out, and interest has been growing! Uno works great with Marko already, but it would be awesome if examples didn't need a custom config for searching through .marko files. This PR adds that feature alongside some Marko documentation and examples.

Changes

• Add .marko to the list of files for searching, everywhere I could find
• Add a Marko example (using Marko Run, which is built on Vite)
• Include Marko examples in a few docs pages

Limitations

• Eventually, we will need a Marko extractor if we want support for the class shorthand
  • This almost isn't necessary if the project includes Attributify, but it is definitely nice to have for completion
• The regex in packages-integrations/vscode/src/utils.ts doesn't support concise mode. I added support for optional ending tag name (<style></>), but concise mode is definitely a bigger deal 😅