Inline the tailwindcss/index.css contents at publish time (#13233)

* add `pre-publish-optimizations` script

* handle `@import` ourselves

This implementation is fairly simple right now, because we don't have
to worry about resolving folders or modules since we don't use them.

* pretty print index.css file

* update changelog

* Revert "handle `@import` ourselves"

This reverts commit 13a46404c1.

* drop the `1.`

* Update scripts/pre-publish-optimizations.mjs

Co-authored-by: Jordan Pittman <jordan@cryptica.me>

* Update CHANGELOG.md

Co-authored-by: Adam Wathan <adam.wathan@gmail.com>

* run prettier

---------

Co-authored-by: Jordan Pittman <jordan@cryptica.me>
Co-authored-by: Adam Wathan <adam.wathan@gmail.com>

.github/workflows/release-oxide.yml

@@ -219,6 +219,9 @@ jobs:
           cp bindings-x86_64-unknown-linux-gnu/* ./npm/linux-x64-gnu/
           cp bindings-x86_64-unknown-linux-musl/* ./npm/linux-x64-musl/
 
+      - name: Run pre-publish optimizations scripts
+        run: node ./scripts/pre-publish-optimizations.mjs
+
       - name: Lock pre-release versions
         run: node ./scripts/lock-pre-release-versions.mjs