🔨 Update generate-client.sh script, make it fail on errors, fix generation (#1360)

scripts/generate-client.sh

@@ -1,6 +1,11 @@
 #! /usr/bin/env bash
 
-PYTHONPATH=backend python -c "import app.main; import json; print(json.dumps(app.main.app.openapi()))" > openapi.json
+set -e
+set -x
+
+cd backend
+python -c "import app.main; import json; print(json.dumps(app.main.app.openapi()))" > ../openapi.json
+cd ..
 node frontend/modify-openapi-operationids.js
 mv openapi.json frontend/
 cd frontend