feat: do not show 100 times the insert

LanguageServer/src/main/java/de/dhbw/handler/CodeActionHandler.java

@@ -136,7 +136,10 @@ public class CodeActionHandler {
                         CodeAction action = new CodeAction("Insert " + conversionHelper.cleanType(typeInsert.getInsertString()));
                         action.setKind(CodeActionKind.QuickFix);
                         action.setEdit(edit);
-                        actions.add(Either.forRight(action));
+
+                        if(!actions.stream().map(el -> el.getRight().getTitle()).toList().contains(action.getTitle())){
+                            actions.add(Either.forRight(action));
+                        }
                     } catch (Exception e) {
                         logService.log("Error creating Actions, returning empty List. The Error was: " + e.getMessage(), MessageType.Error);
                     }