Add Company Tender Approval Statistics Endpoint and Update API Documentation

- Introduced a new API endpoint to retrieve company-specific tender approval statistics, enhancing the analytics capabilities of the tender management system.
- Implemented the `GetCompanyTenderApprovalStats` method in the service layer to fetch detailed statistics, including total approvals, approved and rejected tenders, and submission counts.
- Updated Swagger documentation to accurately reflect the new endpoint, including detailed descriptions, parameters, and response formats for the `CompanyTenderApprovalStatsResponse`.
- Enhanced the router to include the new statistics route, ensuring adherence to Clean Architecture principles and maintaining a clear separation of concerns in the handler layer.
- Added necessary request and response forms to support the new functionality, improving the overall API structure and usability.

cmd/web/docs/swagger.yaml

@@ -924,6 +924,33 @@ definitions:
     x-enum-varnames:
     - ApprovalStatusApproved
     - ApprovalStatusRejected
+  tender_approval.CompanyTenderApprovalStatsResponse:
+    properties:
+      approvals_by_status:
+        additionalProperties:
+          format: int64
+          type: integer
+        type: object
+      approvals_by_submission:
+        additionalProperties:
+          format: int64
+          type: integer
+        type: object
+      approved_tenders:
+        type: integer
+      company_id:
+        type: string
+      last_updated:
+        type: integer
+      partnership_count:
+        type: integer
+      rejected_tenders:
+        type: integer
+      self_apply_count:
+        type: integer
+      total_approvals:
+        type: integer
+    type: object
   tender_approval.CreateTenderApprovalForm:
     properties:
       status:
@@ -5058,6 +5085,36 @@ paths:
       summary: Get tender approval by ID
       tags:
       - TenderApprovals
+  /api/v1/tender-approvals/stats:
+    get:
+      consumes:
+      - application/json
+      description: Get comprehensive tender approval statistics for a specific company
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: Company tender approval statistics retrieved successfully
+          schema:
+            allOf:
+            - $ref: '#/definitions/response.APIResponse'
+            - properties:
+                data:
+                  $ref: '#/definitions/tender_approval.CompanyTenderApprovalStatsResponse'
+              type: object
+        "400":
+          description: Bad request - Invalid company ID
+          schema:
+            $ref: '#/definitions/response.APIResponse'
+        "500":
+          description: Internal server error
+          schema:
+            $ref: '#/definitions/response.APIResponse'
+      security:
+      - BearerAuth: []
+      summary: Get company tender approval statistics
+      tags:
+      - TenderApprovals
   /api/v1/tender-approvals/tender/{tender_id}:
     get:
       consumes: