TestUnit For Database

[Omid2831]

This pull request introduces the initial setup for the new React + TypeScript client application for the Chart Bubble Graph project. It establishes the project's structure, configures tooling, and implements basic API integration for country data. The changes also update documentation and environment variable handling to reflect the new frontend architecture.

Project structure and tooling setup:

• Added a new React + TypeScript client with essential configuration files (client/package.json, client/index.html, client/tsconfig*.json, client/vite.config.ts, client/eslint.config.js, client/.gitignore) and Tailwind CSS for styling. [1] [2] [3] [4] [5] [6] [7] [8] [9]

API integration and type definitions:

• Implemented Axios configuration (client/src/api/config/axios.config.ts), defined API endpoints (client/src/api/constant/endpoints.const.ts), and added a service for fetching country data (client/src/api/services/countries-data.service.ts) with corresponding TypeScript types (client/src/api/types/data.types.ts). [1] [2] [3] [4]

App entry point and basic rendering:

• Created the app entry point and root component with a simple "Hello World" render (client/src/main.tsx, client/src/App.tsx). [1] [2]

Documentation and environment variables:

• Added a new concise ReadMe.md for the client, reflecting the updated stack and instructions, and removed the old README.md and .env.example. Introduced client/.env.example for frontend environment variables. [1] [2] [3] [4]

These changes lay the foundation for further frontend development, including chart visualization, AI summary, and PDF export features.