refactor: Button components (#6929)

* feat: refactor button components

* fix: qa

* fix: storybook

* a11y: pass

* fix: build

* fix: rename default ->md

* fix: lint

* docs: buttons.md

* refactor part 1

* refactor part 2

* fix: undo refactor for fresh restart

* refactor

* Revert "refactor"

This reverts commit 96d65902d7.

* refactor: part 1

* fix: qa

* fix: qa

* fix: qa

* fix: qa

* fix: qa

* fix: qa

* fix: qa

* fix: qa

* fix: remove text-contrast

* fix: qa

* fix: v-tooltip

* fix: lint

* fix: split broken

* fix: passkey qa

* fix: qa

* fix: qa

* fix: prepr

* fix: splitbutton

* improve button group seam

---------

Signed-off-by: Calum H. <calum@modrinth.com>
Co-authored-by: Prospector <6166773+Prospector@users.noreply.github.com>

apps/app-frontend/src/locales/en-US/index.json

@@ -1229,6 +1229,9 @@
   "app.update.complete-toast.title": {
     "message": "Version {version} was successfully installed!"
   },
+  "app.user.project.install-to-instance": {
+    "message": "Install to instance"
+  },
   "app.world.server-modal.placeholder-address": {
     "message": "example.modrinth.gg"
   },