add action to test new bq auth method

Author: alistairewj

.github/workflows/test_bq_auth.yml

@@ -0,0 +1,29 @@
+name: Generate tables on BigQuery
+
+on:
+  push:
+    branches: [alistair/test_bq_auth]
+
+env:
+  MIMIC_IV_VERSION: 3_1
+
+jobs:
+  create-tables:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+
+      - id: 'auth'
+        uses: 'google-github-actions/auth@v2'
+        with:
+          service_account: '[email protected]'
+          workload_identity_provider: 'projects/569883598760/locations/global/workloadIdentityPools/github/providers/mimic-code'
+
+      - name: 'Set up Cloud SDK'
+        uses: 'google-github-actions/setup-gcloud@v0'
+
+      - name: Test making a table with bigquery
+        run: |
+          echo "Generating tables on BigQuery"
+          bq query --use_legacy_sql=False 'select * from physionet-data.mimiciv_icu.d_items limit 1'