feat: rewrite and redesign

[MarshallOfSound]

Description of Change

Brings our release website into 2025, all the same features but a brand new design and codebase that in theory makes it easy (and safe) to add new things. None of this handlebars nonsense anymore.

The new site is built entirely in React powered by Remix, all pages are server side rendered similar to the old handle bars site but transitions are client side, cached and way cleaner. It's themed using tailwind, the tailwind stuff I kinda understand now but I'll be honest I asked some LLM's for help with the design part (not my strong suite), turns out LLMs can spit out good tailwind based designs.

The new repo also maintains the old CI jobs, while adding a new build/lint/test one for the new codebase.

You can try out the new design / experience yourself right here on the Staging Heroku Deployment that I spun up. There are also a few screenshots below to give you an idea.

The review I'm looking for here:

• Things I missed / didn't convert from the old codebase
• Any bugs / issues with the new codebase
• If someone really prefers the old design I guess you can tell me 😆
  • Note for all you light mode users out there, the screenshots are in dark mode but it does support your system theme, so light mode works too.

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[MarshallOfSound]

All the deploys make this PR kinda unreadable... Gonna make a new one #152