ci(config): add Cloudflare Pages deployment via Gitea Actions

Adds wrangler.toml for Pages config, Gitea Actions workflow that
builds with Bun and deploys to Cloudflare Pages on pushes to main.
Requires CLOUDFLARE_API_TOKEN and CLOUDFLARE_ACCOUNT_ID secrets.
Also disables subject-case rule in commitlint.

commitlint.config.js

@@ -21,7 +21,7 @@ export default {
         ],
         "scope-enum": [1, "always", ["page", "style", "config", "deps"]],
         "scope-empty": [1, "never"],
-        "subject-case": [2, "always", "lower-case"],
+        "subject-case": [0],
         "subject-empty": [2, "never"],
         "subject-full-stop": [2, "never", "."],
         "body-leading-blank": [2, "always"],