github action to create required hashes

Author: jay-tux

.github/worfklows/hash.yml

@@ -0,0 +1,17 @@
+name: Generate Hashes on Release
+  on:
+    release:
+      types: [published]
+
+jobs:
+  hash:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: MCJack123/ghaction-generate-release-hashes@v1
+        with:
+          hash-type: sha256
+          file-name: hashes.txt
+      - uses: actions/upload-artifact@v2
+        with:
+          name: Asset Hashes
+          path: hashes.txt