Citizen runners now have to provide an email address for verification

ref #112

src/errors/RunnerErrors.ts

@@ -35,6 +35,17 @@ export class RunnerGroupNeededError extends NotAcceptableError {
 	message = "Runner's need to be part of one group (team or organisation)! \n You provided neither."
 }
 
+/**
+ * Error to throw when a citizen runner has no mail-address.
+ */
+export class RunnerEmailNeededError extends NotAcceptableError {
+	@IsString()
+	name = "RunnerEmailNeededError"
+
+	@IsString()
+	message = "Citizenrunners have to provide an email address for verification and contacting."
+}
+
 /**
 * Error to throw when a runner still has distance donations associated.
 */