🚧 CreateUserErrors model

ref #14

src/errors/CreateUserErrors.ts

@@ -0,0 +1,24 @@
+import { NotFoundError } from 'routing-controllers';
+import { IsString } from 'class-validator';
+
+/**
+ * Error to throw when a usergroup couldn't be found.
+ */
+export class UserGroupNotFoundError extends NotFoundError {
+	@IsString()
+	name = "UserGroupNotFoundError"
+
+	@IsString()
+	message = "User Group not found!"
+}
+
+/**
+ * Error to throw when no username or email is set
+ */
+export class UsernameOrEmailNeededError extends NotFoundError {
+	@IsString()
+	name = "UsernameOrEmailNeededError"
+
+	@IsString()
+	message = "no username or email is set!"
+}