Add prerelease workflow, thanks Tyler (#447)

Author: bmagyar

.github/workflows/prerelease.yaml

@@ -0,0 +1,27 @@
+# This config uses industrial_ci (https://github.com/ros-industrial/industrial_ci.git).
+# For troubleshooting, see readme (https://github.com/ros-industrial/industrial_ci/blob/master/README.rst)
+
+name: pre-release
+
+on:
+  workflow_dispatch:
+
+jobs:
+  default:
+    strategy:
+      fail-fast: false
+      matrix:
+        distro: [foxy, galactic, rolling]
+
+    env:
+      ROS_DISTRO: ${{ matrix.distro }}
+      PRERELEASE: true
+      BASEDIR: ${{ github.workspace }}/.work
+
+    name: "${{ matrix.distro }}"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: industrial_ci
+        uses: ros-industrial/industrial_ci@master
+