refactor: architecture base

- Moved NodeCG context management to a dedicated context module.
- Introduced message handling utilities for better message listening and sending.
- Updated startgg integration to use new message handling methods.
- Removed deprecated replicant utilities and replaced them with a new structure.
- Refactored replicant imports in graphics components to align with new structure.
- Added new pack-related types and schemas for better type safety.
- Cleaned up unused files and consolidated pack configuration into a single module.
- Updated TypeScript configurations to reflect new directory structure.

src/extension/index.ts

@@ -1,14 +1,13 @@
 import type { NodeCGServerAPI } from '../types/index.js';
-import { set } from './util/nodecg.js';
+import { setNodecgContext } from '../nodecg/extension/context.js';
 
 export default async (nodecg: NodeCGServerAPI) => {
   /**
    * Because of how top-level `import`s work, it helps to use `import`s here
    * to force things to be loaded *after* the NodeCG context is set.
    */
-  set(nodecg); // set nodecg "context" before anything else
-  await import('./util/replicants.js'); // make sure replicants are set up
-  await import('./example.js');
+  setNodecgContext(nodecg); // set nodecg "context" before anything else
+  await import('./modules/replicants.js'); // make sure replicants are set up
   await import('./startgg.js');
   await import('./challonge.js');
   await import('./pack-manager.js');