feat(themes): generate button tokens (#12300)

* chore: check in progress

* chore: check in progress

* feat(themes): generate button tokens

* fix(react): remove unnecessary files and lint errors

* chore(project): update snapshots

* fix(styles): use generated tokens for button separator

* chore(styles): fix name

Author: abbeyhrt

packages/elements/src/__tests__/__snapshots__/PublicAPI-test.js.snap

@@ -45,6 +45,7 @@ Array [
   "breakpointDown",
   "breakpointUp",
   "breakpoints",
+  "buttonTokens",
   "caption01",
   "caption02",
   "code01",
@@ -112,6 +113,7 @@ Array [
   "fontFamily",
   "fontWeight",
   "fontWeights",
+  "formatTokenName",
   "g10",
   "g100",
   "g90",