bundle ersatztv-channel binary with macos app (#2856)

.github/workflows/artifacts.yml

@@ -92,6 +92,20 @@ jobs:
           plutil -replace CFBundleVersion -string "${{ inputs.info_version }}" ErsatzTV-macOS/ErsatzTV-macOS/Info.plist
           scripts/macOS/bundle.sh
 
+      - name: Bundle ersatztv-channel from next
+        shell: bash
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          next_target="${{ matrix.target }}"
+          next_target="${next_target/osx/macos}"
+          gh release download develop --repo ErsatzTV/next --pattern "ersatztv-next-*-${next_target}.tar.gz" --dir next-download
+          mkdir next-extracted
+          tar xzvf next-download/*.tar.gz -C next-extracted --strip-components 1
+          mv next-extracted/ersatztv-channel ErsatzTV-Legacy.app/Contents/MacOS/
+          chmod +x ErsatzTV-Legacy.app/Contents/MacOS/ersatztv-channel
+          rm -rf next-download next-extracted
+
       - name: Sign
         shell: bash
         run: scripts/macOS/sign.sh