feat: automate config.json copying and update dependencies

- Added a script (copy_config.js) to copy config.json from the root directory to the frontend's public directory before starting the development server, building, or starting the application.
- Updated package.json scripts to include the config copying step.
- Updated dependencies in package.json, including adding web3 and ensuring tailwindcss is included in devDependencies.
- Modified tsconfig.json to include a path for the config file.
- Added a new config.json file in the public directory with API_URL, CONTRACT_ADDRESS, and ABI details for the smart contract.

crypto_clash_frontend/tsconfig.json

@@ -19,7 +19,8 @@
       }
     ],
     "paths": {
-      "@/*": ["./*"]
+      "@/*": ["./*"],
+      "@/config": ["../config.json"]
     }
   },
   "include": [
@@ -29,6 +30,6 @@
     ".next/types/**/*.ts",
     ".next/dev/types/**/*.ts",
     "**/*.mts"
-  ],
+, "copy_config.js"  ],
   "exclude": ["node_modules"]
 }