Add Register Action (#187)

Author: gdalle

.github/workflows/Register.yml

@@ -0,0 +1,16 @@
+name: Register Package
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Version to register or component to bump
+        required: true
+      subdir:
+        description: Subdirectory containing the package to register
+jobs:
+  register:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: julia-actions/RegisterAction@latest
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}