Initial work setting up scheduled releases for develop branch.

.github/workflows/tag-nightly.yaml

@@ -0,0 +1,27 @@
+name: Tag Nightly Builds
+
+on:
+  # schedule event triggers always run on the default branch
+  # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#schedule
+  schedule:
+    - cron: "21 2 * * 2,4,6"     # 2:21am UTC tues/thurs/sat == 7:21pm PDT mon/wed/fri -- see https://crontab.guru/#21_01_*_*_2,4,6
+  workflow_dispatch:
+
+jobs:
+  tag-develop-nightly:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Date Env
+        run: |
+          echo NIGHTLY_DATE=$(date --rfc-3339=date) >> ${GITHUB_ENV}
+      - name: Update Tag
+        uses: actions/github-script@v7.0.1
+        with:
+          github-token: ${{ secrets.GITHUB_NIGHTLY_TOKEN }}
+          script: |
+            github.rest.git.createRef(
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: "refs/tags/Second_Life_Develop#${{ env.NIGHTLY_DATE }}",
+              sha: context.sha
+            )