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.json

@@ -5976,6 +5976,58 @@
                 }
             }
         },
+        "/api/v1/tender-approvals/stats": {
+            "get": {
+                "security": [
+                    {
+                        "BearerAuth": []
+                    }
+                ],
+                "description": "Get comprehensive tender approval statistics for a specific company",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "TenderApprovals"
+                ],
+                "summary": "Get company tender approval statistics",
+                "responses": {
+                    "200": {
+                        "description": "Company tender approval statistics retrieved successfully",
+                        "schema": {
+                            "allOf": [
+                                {
+                                    "$ref": "#/definitions/response.APIResponse"
+                                },
+                                {
+                                    "type": "object",
+                                    "properties": {
+                                        "data": {
+                                            "$ref": "#/definitions/tender_approval.CompanyTenderApprovalStatsResponse"
+                                        }
+                                    }
+                                }
+                            ]
+                        }
+                    },
+                    "400": {
+                        "description": "Bad request - Invalid company ID",
+                        "schema": {
+                            "$ref": "#/definitions/response.APIResponse"
+                        }
+                    },
+                    "500": {
+                        "description": "Internal server error",
+                        "schema": {
+                            "$ref": "#/definitions/response.APIResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/api/v1/tender-approvals/tender/{tender_id}": {
             "get": {
                 "security": [
@@ -7739,6 +7791,46 @@
                 "ApprovalStatusRejected"
             ]
         },
+        "tender_approval.CompanyTenderApprovalStatsResponse": {
+            "type": "object",
+            "properties": {
+                "approvals_by_status": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "type": "integer",
+                        "format": "int64"
+                    }
+                },
+                "approvals_by_submission": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "type": "integer",
+                        "format": "int64"
+                    }
+                },
+                "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"
+                }
+            }
+        },
         "tender_approval.CreateTenderApprovalForm": {
             "type": "object",
             "properties": {