refactor: Convert project from JavaScript to TypeScript

- Converted all .js files to .ts
- Added TypeScript configuration (tsconfig.json)
- Added ESLint and Prettier configuration
- Updated package.json dependencies
- Modified Docker and application configurations

tests/deploy-commands.test.ts

@@ -20,13 +20,13 @@ jest.mock('node:path', () => {
   const actual = jest.requireActual('node:path');
   return {
     ...actual,
-    join: (...args) => args.join('/'),
-    resolve: (...args) => args.join('/'),
+    join: (...args: string[]) => args.join('/'),
+    resolve: (...args: string[]) => args.join('/'),
   };
 });
 
 describe('deploy-commands.js', () => {
-  let origEnv;
+  let origEnv: typeof process.env;
   beforeAll(() => {
     origEnv = { ...process.env };
     process.env.CLIENT_ID = '12345';