Refactor TED Calendar and EForm Structure for Enhanced Functionality

- Updated the GetOJS function to accept a base URL parameter, improving flexibility in constructing the calendar URL.
- Removed the deprecated eform.go file, streamlining the codebase by eliminating unused components.
- Introduced new eform structures for BusinessRegistrationInformationNotice, ContractNotice, ContractAwardNotice, and PriorInformationNotice, enhancing the handling of TED XML data.
- Implemented mapping functions to convert eform notices to the Tender entity, improving integration with the tender management system.
- Added a service layer to encapsulate business logic related to eform processing, adhering to Clean Architecture principles.

ted/calendar.go

@@ -10,15 +10,15 @@ import (
 )
 
 const (
-	calendarUrl = "https://ted.europa.eu/en/release-calendar/-/download/file/CSV/%d"
+	calendarUrl = "%s/en/release-calendar/-/download/file/CSV/%d"
 )
 
 // Get OJS Number
-func GetOJS(year int, date string) (string, error) {
+func GetOJS(baseURL string, year int, date string) (string, error) {
 	var (
 		ojs string
 	)
-	url := fmt.Sprintf(calendarUrl, year)
+	url := fmt.Sprintf(calendarUrl, baseURL, year)
 
 	resp, err := http.Get(url)
 	if err != nil {