Create workflow to add to Github project (#1505)

* Create workflow to add to Github project

.github/workflows/add-to-project.yaml

+name: Add PRs and issues to GitHub projects
+
+on:
+  pull_request:
+    types:
+      - opened
+  issues:
+    types:
+      - opened
+
+jobs:
+  add-to-project:
+    name: Add PRs and issues to MIGX project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/add-to-project@v0.4.0
+        with:
+          project-url: https://github.com/orgs/ROCmSoftwarePlatform/projects/20
+          github-token: $${{ secrets.MIGRAPHX_BOT_TOKEN }}