[GitHub Actions] "Draft Tag Release" workflow

.github/workflows/draft_tag_release.yml

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+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+      - '*'
+
+name: Draft Tag Release
+
+jobs:
+  create_draft_release:
+    if: startsWith(github.ref, 'refs/tags/') # sanity-check
+    name: Create Draft Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo (to obtain template files)
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          fetch-depth: 1
+          lfs: false
+      - name: Create Draft Release
+        uses: past-due/action-gh-release@v1
+        with:
+          # Do not explicitly specify a tag_name, so this action takes the github.ref and parses it for just the tag
+          body_path: .github/wz/templates/draft_release_body_template.md
+          draft: true
+          prerelease: false
+        env:
+          # This token is provided by Actions, you do not need to create your own token
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/wz/templates/draft_release_body_template.md

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+### Do not publish this release until all of the assets have been uploaded by CI, and you've verified them according to the Release process. (Then remove this text block.)
+--------
+
+`warzone2100_win_x86_installer.exe` -- The main Windows build (full installer)
+`warzone2100_win_x86_portable.exe` -- The portable version of the Windows build (self contained -- install it anywhere!)
+`warzone2100_macOS.zip`  -- For macOS (10.10+)
+`warzone2100_src.tar.xz` -- The tarball for Linux / BSD / whatever systems. (full source / data)
+
+**IMPORTANT: To build from source, use the warzone2100_src.tar.xz tarball.**
+> The auto-generated GitHub "_Source code (zip) / (tar.gz)_" links do **_not_** include the Git-based autorevision information.