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.

pkg/utils/captcha.go

@@ -12,16 +12,16 @@ type captchaUtils struct{}
 var Captcha = captchaUtils{}
 
 type CaptchaConfig struct {
-	Type       string
-	SiteSecret string // Site secret key for the captcha service
-	SecretKey  string // Secret key for the captcha service
+	Type      string
+	SiteKey   string // Site secret key for the captcha service
+	SecretKey string // Secret key for the captcha service
 }
 
 func (c *captchaUtils) GetCaptchaConfigFromEnv() *CaptchaConfig {
 	return &CaptchaConfig{
-		Type:       Env.Get("CAPTCHA_TYPE", "disable"),
-		SiteSecret: Env.Get("CAPTCHA_SITE_SECRET", ""),
-		SecretKey:  Env.Get("CAPTCHA_SECRET_KEY", ""),
+		Type:      Env.Get(constant.EnvKeyCaptchaProvider, constant.CaptchaTypeDisable),
+		SiteKey:   Env.Get(constant.EnvKeyCaptchaSiteKey, ""),
+		SecretKey: Env.Get(constant.EnvKeyCaptchaSecreteKey, ""),
 	}
 }