Integrate Prettier into project configuration

- Added `eslint-config-prettier` to disable conflicting ESLint rules.
- Configured Prettier with `.prettierrc` for consistent formatting.
- Updated `package.json` scripts to apply and check formatting on entire project.
- Added `.prettierignore` to exclude unnecessary files and directories from formatting.
- Updated dependencies in `package-lock.json` and removed unused packages.

frontend/.prettierrc

@@ -0,0 +1,13 @@
+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "arrowParens": "always",
+  "endOfLine": "lf",
+  "bracketSpacing": true,
+  "jsxSingleQuote": false,
+  "plugins": []
+}