Implement Partytown to prevent blocking analytics script

[endigo9740]

Link to the Page

https://next.skeleton.dev/

Describe the Issue (screenshots encouraged!)

Currently the server that hosts our Analytics solution is down, which is causing the script tag to hang on load. This is causing issues with the documentation site and preventing framework-specific navigation links to fail.

I'm going to implement Partytown to move this off the main thread. This should prevent future interruptions:

https://docs.astro.build/en/guides/integrations-guide/partytown/