worker: Add Cloudflare Workers & Pages support

_worker.js

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+import handler from "./common";
+
+export default {
+  fetch: async (request) => handler(request),
+};

wrangler.toml

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+name = "dohna-ns"
+compatibility_date = "2024-09-02"
+main = "_worker.js"
+no_bundle = false
+minify = true