website: new sveltekit based website (#1239)

* feat: initialize website project

* feat: add initial homepage with download links

* feat: initial download page

* fix: linux icon color

* feat: add mobile nav and github star button

* feat: add older and nightly downloads page

* feat: add supporters and footer

* feat: add author details in about page

* feat: add darkmode toggle for website

* feat: add playstore and flathub download buttons and contribution button

* feat: add blogs support

* feat: remove netlify deploy config and add cloudflare config and favicons + manifest

* chore: add robots.txt

* feat: add spotube logo in navbar and fix build errors

* chore: add gap