User deletion now requires confirmation

ref #100

src/errors/UserErrors.ts

@@ -59,4 +59,16 @@ export class UserIdsNotMatchingError extends NotAcceptableError {
 
 	@IsString()
 	message = "The ids don't match!! \n And if you wanted to change a user's id: This isn't allowed!"
+}
+
+/**
+ * Error to throw when two users' ids don't match.
+ * Usually occurs when a user tries to change a user's id.
+ */
+export class UserDeletionNotConfirmedError extends NotAcceptableError {
+	@IsString()
+	name = "UserDeletionNotConfirmedError"
+
+	@IsString()
+	message = "You are trying to delete a user! \n If you're sure about doing this: provide the ?force=true query param."
 }