feat(auth): add admin authentication with permission checks

- Add admin login handler and logic with IsAdmin verification
- Add admin password reset handler and logic
- Add admin captcha generation handler and logic
- Implement device binding for admin login
- Add login logging for admin authentication
- Check EnableAdminLoginCaptcha configuration
- Separate admin authentication from user authentication
- Verify admin permission before allowing access

internal/handler/auth/admin/adminGenerateCaptchaHandler.go

@@ -0,0 +1,18 @@
+package admin
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/perfect-panel/server/internal/logic/auth/admin"
+	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/pkg/result"
+)
+
+// Generate captcha
+func AdminGenerateCaptchaHandler(svcCtx *svc.ServiceContext) func(c *gin.Context) {
+	return func(c *gin.Context) {
+
+		l := admin.NewAdminGenerateCaptchaLogic(c.Request.Context(), svcCtx)
+		resp, err := l.AdminGenerateCaptcha()
+		result.HttpResult(c, resp, err)
+	}
+}