Add GitHub action to test import after pip install

Author: bfirsh

.github/workflows/ci.yaml

@@ -0,0 +1,22 @@
+name: Python package
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.9]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install
+        run: pip install .
+      - name: Test imports work
+        run: python scripts/test_import.py

scripts/test_import.py

@@ -0,0 +1,3 @@
+# A simple test to ensure that packages import correctly
+import taming.models.cond_transformer
+import taming.models.vqgan