refactor: update import statements to use .js extensions

- Changed all import statements across the project to include the .js extension for consistency and to comply with ES module standards.
- Updated imports in various files including bootstrap.ts, shutdown.ts, config.ts, and many others.
- Ensured that all related modules and types are correctly imported with the new extension.

src/moderation/types.ts

@@ -1,4 +1,4 @@
-import type { BroadcasterClient, ModerationBroadcaster } from "./broadcaster";
+import type { BroadcasterClient, ModerationBroadcaster } from "./broadcaster.js";
 
 export type AIStatus = "pending" | "clean" | "warn" | "flagged" | "error";