perf: omit search for immutable static requests (#13265)

* perf: omit search for immutable static requests

* perf: also applies to /files

* fix: exclude /proxy

* /files/:key/*を301 redirectに

---------

Co-authored-by: tamaina <tamaina@hotmail.co.jp>

packages/backend/src/misc/fastify-hook-handlers.ts

@@ -0,0 +1,9 @@
+import type { onRequestHookHandler } from 'fastify';
+
+export const handleRequestRedirectToOmitSearch: onRequestHookHandler = (request, reply, done) => {
+	const index = request.url.indexOf('?');
+	if (~index) {
+		reply.redirect(301, request.url.slice(0, index));
+	}
+	done();
+};