Initialize NestJS project with essential configuration files and structure

- Added .env.example for application timezone configuration.
- Created .gitignore to exclude unnecessary files and directories.
- Introduced Prettier configuration in .prettierrc for code formatting.
- Set up ESLint configuration in eslint.config.mjs for code quality checks.
- Added nest-cli.json for NestJS project settings.
- Created package.json with project dependencies and scripts for building, testing, and running the application.
- Generated pnpm-lock.yaml for package management.
- Added README.md with project description and setup instructions.
- Created initial application structure with AppModule, AppController, and AppService.
- Implemented basic unit and e2e tests for the application.

nest-cli.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true
+  }
+}