♻️ refactor: standardize code formatting and improve readability across components

- Updated component files to use consistent single quotes for strings.
- Removed unnecessary newlines and adjusted indentation for better readability.
- Simplified conditional rendering and improved code structure in various components.
- Added ESLint configuration for better code quality and adherence to standards.
- Enhanced error handling in i18n request logic.

web/.eslintrc.json

@@ -0,0 +1,6 @@
+{
+  "extends": [
+    "next/core-web-vitals",
+    "next/typescript"
+  ]
+}