New workflow for building releases (with PDF)

Based on  docs-spec-template

Signed-off-by: Jeff Scheel <jeff@riscv.org>

.github/workflows/create-release.yml

@@ -0,0 +1,55 @@
+# This work flow includes source and PDF in Release.  It relies on the build-pdf workflow to create the PDF.
+#
+# NOTE: At this time it only runs manually.
+
+name: Create Document Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Release version, e.g. X.Y.Z:'
+        required: true
+        type: string
+      prerelease:
+        description: 'Tag as a pre-release?'
+        required: false
+        type: boolean
+        default: true
+      draft:
+        description: 'Create release as a draft?'
+        required: false
+        type: boolean
+        default: false
+
+jobs:
+  build:
+    uses: ./.github/workflows/build-pdf.yml
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+    - name: Create Release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: v${{ github.event.inputs.version }}
+        release_name: Release ${{ github.event.inputs.version }}
+        draft: ${{ github.event.inputs.draft }}
+        prerelease: ${{ github.event.inputs.prerelease }}
+    - name: Download Artifacts
+      uses: actions/download-artifact@v2
+      with:
+        name: ${{ needs.build.outputs.pdf-name }}
+    - name: Upload Release Asset
+      id: upload-release-asset
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path:  ${{ needs.build.outputs.pdf-name }}
+        asset_name:  ${{ needs.build.outputs.name }}_${{ github.event.inputs.version }}.pdf
+        asset_content_type: application/pdf