Update Configuration and Enhance Tender Approval Pagination

- Changed the server port from 8081 to 8082 for the web application.
- Updated MongoDB URI to include authentication credentials for improved security.
- Added new query parameters `limit` and `offset` for pagination in tender approval retrieval, enhancing the API's flexibility.
- Modified the response structure to include metadata for pagination, improving the clarity of responses.
- Updated API documentation to reflect the new pagination parameters and response format, ensuring consistency for API consumers.

pkg/response/response.go

@@ -25,11 +25,11 @@ type APIError struct {
 
 // Meta represents metadata for paginated responses
 type Meta struct {
-	Total  int `json:"total,omitempty"`
-	Limit  int `json:"limit,omitempty"`
-	Offset int `json:"offset,omitempty"`
-	Page   int `json:"page,omitempty"`
-	Pages  int `json:"pages,omitempty"`
+	Total  int `json:"total"`
+	Limit  int `json:"limit"`
+	Offset int `json:"offset"`
+	Page   int `json:"page"`
+	Pages  int `json:"pages"`
 }
 
 // Success returns a successful response