Refactor Tender Management API Endpoints and Update Documentation

- Renamed and restructured tender-related API endpoints for improved clarity and consistency, including changing the route from `/admin/tenders` to `/admin/v1/companies` and updating the associated methods.
- Introduced a new SearchForm structure for listing tenders with advanced filtering capabilities, enhancing the API's search functionality.
- Updated the service and repository layers to align with the new endpoint structure, ensuring proper handling of tender data.
- Enhanced Swagger and YAML documentation to reflect the changes in endpoint structure, including detailed descriptions and examples for the new search functionality.
- Improved error handling and response structures to provide clearer feedback to API consumers, ensuring a more robust and user-friendly experience.

internal/tender/entity.go

@@ -119,27 +119,6 @@ const (
 	TenderSourceBulkImport TenderSource = "bulk_import"
 )
 
-// TenderSearchCriteria represents search criteria for tenders
-type TenderSearchCriteria struct {
-	Query               string         `json:"query,omitempty"`
-	NoticeType          string         `json:"notice_type,omitempty"`
-	ProcurementType     string         `json:"procurement_type,omitempty"`
-	CountryCodes        []string       `json:"country_codes,omitempty"`
-	RegionCodes         []string       `json:"region_codes,omitempty"`
-	Classifications     []string       `json:"classifications,omitempty"`
-	MinEstimatedValue   *float64       `json:"min_estimated_value,omitempty"`
-	MaxEstimatedValue   *float64       `json:"max_estimated_value,omitempty"`
-	Currency            string         `json:"currency,omitempty"`
-	DeadlineFrom        *int64         `json:"deadline_from,omitempty"`
-	DeadlineTo          *int64         `json:"deadline_to,omitempty"`
-	PublicationDateFrom *int64         `json:"publication_date_from,omitempty"`
-	PublicationDateTo   *int64         `json:"publication_date_to,omitempty"`
-	Status              []TenderStatus `json:"status,omitempty"`
-	Source              []TenderSource `json:"source,omitempty"`
-	BuyerOrganizationID string         `json:"buyer_organization_id,omitempty"`
-	Languages           []string       `json:"languages,omitempty"`
-}
-
 // TenderStatistics represents tender statistics
 type TenderStatistics struct {
 	TotalTenders            int64            `json:"total_tenders"`