feat: add captcha support for user login and enhance user profile page

- Refactored userLogin function to include captcha handling.
- Introduced getCaptchaConfig API to fetch captcha configuration.
- Added Captcha component to handle different captcha providers (hCaptcha, reCaptcha, Turnstile).
- Updated LoginForm component to integrate captcha verification.
- Created UserProfile component to display user information with avatar.
- Implemented getUserByUsername API to fetch user details by username.
- Removed deprecated LoginRequest interface from user model.
- Enhanced navbar and layout with animation effects.
- Removed unused user page component and added dynamic user profile routing.
- Updated localization files to include captcha-related messages.
- Improved Gravatar component for better avatar handling.

web/package.json

@@ -9,6 +9,8 @@
     "lint": "next lint"
   },
   "dependencies": {
+    "@hcaptcha/react-hcaptcha": "^1.12.1",
+    "@marsidev/react-turnstile": "^1.3.0",
     "@radix-ui/react-checkbox": "^1.3.3",
     "@radix-ui/react-dialog": "^1.1.14",
     "@radix-ui/react-label": "^2.1.7",
@@ -30,6 +32,7 @@
     "next-themes": "^0.4.6",
     "react": "19.1.0",
     "react-dom": "19.1.0",
+    "react-google-recaptcha-v3": "^1.11.0",
     "react-icons": "^5.5.0",
     "rehype-highlight": "^7.0.2",
     "sonner": "^2.0.6",