Fix handlebars import for media provider, pw env file

[jbukl]

adding of cards with {clipboard-text} and {audio} were failing - handlebars import in one file wasn't converted for the move to esm

• fix handlebars import media provider for templates
• remove globals comments from files (though none of the others were missing anything)
• add .env file because it was annoying me to run playwright locally since I had to explicitly export the SW flag for CLI usage (and centralizes the env stuff instead of having it lingering in multiple places) - let me know if not wanted

[github-actions]

✔️ No visual differences introduced by this PR.

View Playwright Report (note: open the "playwright-report" artifact)

[djahandarie]

Oh, could you open a PR for the master branch?

[djahandarie]

Err, nevermind, I see mine was still unmerged, I get it now 😃