Refactor health check and user management endpoints for improved structure and clarity

- Replaced the existing health check endpoint with a new handler at `/admin/v1/health` to align with the updated API structure.
- Introduced a dedicated `health.go` file to encapsulate health check logic and response formatting.
- Updated Swagger documentation to reflect the new health check endpoint and its response structure.
- Refined user management routes to enhance clarity and maintainability, including changes to login, logout, and profile management endpoints.
- Ensured all user-related endpoints are now prefixed appropriately and documented in Swagger for better API usability.

cmd/web/bootstrap.go

@@ -116,13 +116,7 @@ func initHTTPServer(conf infra.Config, log logger.Logger) *echo.Echo {
 	})
 
 	// Add health check endpoint
-	e.GET("/health", func(c echo.Context) error {
-		return c.JSON(http.StatusOK, map[string]interface{}{
-			"status":  "healthy",
-			"time":    time.Now().Unix(),
-			"version": "1.0.0",
-		})
-	})
+	e.GET("/admin/v1/health", healthHandler)
 
 	// Add Swagger documentation endpoint
 	e.GET("/swagger/*", echoSwagger.WrapHandler)