add artifact publishing step to GA workflow

Author: slayoo

.github/workflows/tests.yml renamed to .github/workflows/tests+artifacts.yml

@@ -1,4 +1,4 @@
-name: tests
+name: tests+artifacts
 
 defaults:
   run:
@@ -63,6 +63,11 @@ jobs:
 
       - run: python -m build
 
+      - uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: dist
+
 #      - if: ${{ failure() }}
 #        uses: mxschmitt/action-tmate@v3
 #        with: