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.

test/jest-e2e.json

@@ -0,0 +1,9 @@
+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}