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/src/config.ts

@@ -16,6 +16,7 @@ const config = {
     bodyWidthMobile: "100vw",
     postsPerPage: 12,
     commentsPerPage: 8,
+    animationDurationSecond: 0.5,
     footer: {
         text: "Liteyuki ICP备 1145141919810",
         links: []