Overhaul our toolchain

[lgarron]

This is a reworking of: #112

• Replace gulp with a build on fantasticon.
• Update package exports to match.
• Generate icons.cubing.net from the built lib.
  • Remove Bootstrap and modernize the docs.
• Adopt bun for faster building, running uncompiled TypeScript scripts, and keeping dependencies up to date cheaply.

The SVG fonts aren't a 100% pixel-perfect alignment match to what they were before, but I've adjusted things so that they should be very close to a drop-in replacement.

Things that require fixing before merging:

• Figure out what to do about nix compat with @jfly
• Include the latest SVGs from main.
• Fix up SVGs that relied on painting white instead of boolean operations.
• Update README.md.

Fixes #55 and #93

[lgarron]

Here's a screenshot of the updated generated site:

[jfly]

Nice! I dm-ed you about re-nixifying this. (I'm running into an issue where the lockfile you've committed is missing an integrity hash).

The website redesign looks great, but I do have some feedback. How hard would it be to pull that into a separate PR so we can focus this PR entirely on harmonizing the nix stuff with the bun stuff?

[lgarron]

The website redesign looks great, but I do have some feedback. How hard would it be to pull that into a separate PR so we can focus this PR entirely on harmonizing the nix stuff with the bun stuff?

Not too hard, but I don't want to touch any old website code and we'd have to coordinate the branches to make sure it stays up to date.

[lgarron]

The website redesign looks great, but I do have some feedback. How hard would it be to pull that into a separate PR so we can focus this PR entirely on harmonizing the nix stuff with the bun stuff?

Not too hard, but I don't want to touch any old website code and we'd have to coordinate the branches to make sure it stays up to date.

Split into: #138

[lgarron]

• Fix up SVGs that relied on painting white instead of boolean operations.

I have this mostly done, but will address it in a followup PR.