DRTVWR-601: Add GitHub Actions boilerplate.

.github/dependabot.yaml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly 

.github/release.yaml

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+changelog:
+  exclude:
+    labels:
+      - ignore-for-release
+    authors:
+      - dependabot 
+  categories:
+    - title: Breaking Changes 🛠
+      labels:
+        - semver-major
+        - breaking-change
+    - title: New Features 🎉
+      labels:
+        - semver-minor
+        - enhancement
+    - title: Other Changes
+      labels:
+        - '*'

.github/workflows/build.yaml

@@ -0,0 +1,11 @@
+name: Build
+on: [push]
+jobs:
+  build:
+    runs-on: [ubuntu-latest]
+    steps:
+      - uses: secondlife/action-autobuild@v3
+        with:
+          platform: common
+      - uses: secondlife/action-autobuild-release@v2
+        if: startsWith(github.ref, 'refs/tags/v')