chore: gitignore update to include tokens dist

Tokens dist files are no longer ignored and are committed in the repo.
But the gitignore was still ignoring them, which throws warnings
when staging and committing the changes to these files:
"Git: The following paths are ignored by one of your gitignore files"

.gitignore

@@ -1,5 +1,6 @@
 dist
 dist-site
+!tokens/dist
 
 # Recommended update re:https://docs.netlify.com/integrations/frameworks/eleventy/
 **/node_modules/**