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/main.go

@@ -1,22 +1,3 @@
-// Package main Tender Management API
-//
-// This is the API documentation for the Tender Management System.
-//
-//	Schemes: http, https
-//	Host: localhost:8081
-//	BasePath: /api/v1
-//	Version: 1.0.0
-//
-//	Consumes:
-//	- application/json
-//
-//	Produces:
-//	- application/json
-//
-//	Security:
-//	- bearer
-//
-// swagger:meta
 package main
 
 // @title Tender Management API
@@ -32,25 +13,22 @@ package main
 // @license.url http://www.apache.org/licenses/LICENSE-2.0.html
 
 // @host localhost:8081
-// @BasePath /api/v1
+// @BasePath /admin/v1
 
 // @securityDefinitions.apikey BearerAuth
 // @in header
 // @name Authorization
 // @description Type "Bearer" followed by a space and JWT token.
 
-// @tag.name customers
-// @tag.description Customer management operations
+// @tag.name Users
+// @tag.description User management operations including authentication, profile management, and admin operations
 
-// @tag.name users
-// @tag.description User management operations
+// @tag.name Authorization
+// @tag.description Authentication operations including login, logout, and token management
 
-// @tag.name health
+// @tag.name Health
 // @tag.description Health check operations
 
-// @tag.name auth
-// @tag.description Authentication operations
-
 import (
 	"context"
 	"fmt"