feat: @discordjs/proxy (#7925)

Co-authored-by: Parbez <imranbarbhuiya.fsd@gmail.com>

packages/proxy/src/util/util.ts

@@ -0,0 +1,10 @@
+import type { IncomingMessage, ServerResponse } from 'node:http';
+
+/**
+ * Represents a potentially awaitable value
+ */
+export type Awaitable<T> = T | PromiseLike<T>;
+/**
+ * Represents a simple HTTP request handler
+ */
+export type RequestHandler = (req: IncomingMessage, res: ServerResponse) => Awaitable<void>;