Add GitHub actions file to trigger FHIR IG build

For the purpose of iterating on template updates

.github/workflows/build-test-ig.yml

@@ -0,0 +1,21 @@
+name: Build test FHIR IG
+
+on:
+  push:
+    branches: [ dev ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Manually trigger test FHIR IG
+      run: |
+        curl -X POST \
+        --url "https://us-central1-fhir-org-starter-project.cloudfunctions.net/ig-commit-trigger" \
+        --header "Content-type: application/json" \
+        --data '{"ref": "refs/heads/main", "repository": {"full_name": "robeastwood-agency/test-fhir-ig-2"}}'
+