build: add TypeScript configuration and generate declaration files

- Add tsconfig.json for TypeScript compilation with declaration and source map generation
- Generate .d.ts declaration files for all modules, services, controllers, and models
- Update package.json with NestJS dependencies and TypeScript development tools
- Include database files in the distribution output for persistence

dist/auth/session.serializer.d.ts

@@ -0,0 +1,8 @@
+import { PassportSerializer } from '@nestjs/passport';
+import { UsersService } from '../users/users.service';
+export declare class SessionSerializer extends PassportSerializer {
+    private readonly usersService;
+    constructor(usersService: UsersService);
+    serializeUser(user: any, done: Function): void;
+    deserializeUser(userId: any, done: Function): Promise<void>;
+}