add event link sharing

PadelClubData/Data/Event.swift

@@ -100,6 +100,10 @@ final public class Event: BaseEvent {
         tournaments.filter({ $0.isFree() == false && $0.isCanceled == false && $0.isDeleted == false })
     }
     
+    public func shareURL() -> URL? {
+        return URL(string: URLs.main.url.appending(path: "event/\(id)").absoluteString.removingPercentEncoding!)
+    }
+
     func insertOnServer() throws {
         DataStore.shared.events.writeChangeAndInsertOnServer(instance: self)
         for tournament in self.tournaments {