Add a source artifact for Github Actions

.github/workflows/dist-workflow.yaml

@@ -0,0 +1,37 @@
+name: Dist
+on: [push, pull_request]
+jobs:
+  dist_source:
+    name: Source
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Install packages
+        run: |
+          sudo apt install build-essential make python python-yaml bc git
+      - name: Dist source
+        run: |
+          make dist-source
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: source-artifact
+          path: dist/*.tar.xz
+#  dist_site:
+#    name: Site
+#    runs-on: ubuntu-18.04
+#    steps:
+#      - name: Checkout code
+#        uses: actions/checkout@v2
+#      - name: Install packages
+#        run: |
+#          sudo apt install build-essential make python python-yaml bc git
+#      - name: Dist source
+#        run: |
+#          make dist-site
+#      - name: Upload artifact
+#        uses: actions/upload-artifact@v2
+#        with:
+#          name: site-artifact
+#          path: dist/*.tar.xz