Finish first iteration of Railway integration

backend/src/routes/v1/integration.ts

@@ -30,6 +30,7 @@ router.post( // new: add new integration for integration auth
 	body('appId').trim(),
 	body('sourceEnvironment').trim(),
 	body('targetEnvironment').trim(),
+	body('targetEnvironmentId').trim(),
 	body('owner').trim(),
 	body('path').trim(),
 	body('region').trim(),

backend/src/routes/v1/integrationAuth.ts

@@ -111,6 +111,20 @@ router.get(
 	integrationAuthController.getIntegrationAuthVercelBranches
 );
 
+router.get(
+	'/:integrationAuthId/railway/environments',
+	requireAuth({
+		acceptedAuthModes: ['jwt']
+	}),
+	requireIntegrationAuthorizationAuth({
+		acceptedRoles: [ADMIN, MEMBER]
+	}),
+	param('integrationAuthId').exists().isString(),
+	query('appId').exists().isString(),
+	validateRequest,
+	integrationAuthController.getIntegrationAuthRailwayEnvironments
+);
+
 router.delete(
 	'/:integrationAuthId',
 	requireAuth({