Prepare command bar to support modeling commands (#1184)

* Tweak toaster look and feel

* Add icons, tweak plus icon names

* Rename commandBarMeta to commandBarConfig

* Refactor command bar, add support for icons

* Create a tailwind plugin for aria-pressed button state

* Remove overlay from behind command bar

* Clean up toolbar

* Button and other style tweaks

* Icon tweaks follow-up: make old icons work with new sizing

* Delete unused static icons

* More CSS tweaks

* Small CSS tweak to project sidebar

* Add command bar E2E test

* fumpt

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* fix typo in a comment

* Fix icon padding (built version only)

* Update onboarding and warning banner icons padding

* Misc minor style fixes

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/components/CodeMenu.module.css

@@ -1,13 +1,13 @@
 .button {
   @apply flex justify-between items-center gap-2 px-2 py-1 text-left border-none rounded-sm;
   @apply font-mono text-xs font-bold select-none text-chalkboard-90;
-  @apply ui-active:bg-liquid-10/50 ui-active:text-liquid-90;
+  @apply ui-active:bg-energy-10/50 ui-active:text-inherit;
   @apply transition-colors ease-out;
 }
 
 :global(.dark) .button {
   @apply text-chalkboard-30;
-  @apply ui-active:bg-chalkboard-80 ui-active:text-liquid-10;
+  @apply ui-active:bg-chalkboard-80 ui-active:text-energy-10;
 }
 
 .button small {