Add macOS artifacts to GitHub releases

This fix https://github.com/input-output-hk/foliage/issues/62 but require https://github.com/input-output-hk/foliage/issues/47 to be addressed first!

.github/workflows/release.yml

@@ -7,7 +7,11 @@ on:
 
 jobs:
   build-and-release:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    runs-on: ${{ matrix.os }}
 
     permissions:
       contents: write
@@ -20,9 +24,16 @@ jobs:
         uses: cachix/install-nix-action@v20
 
       - name: Build
-        run: nix build .#packages.x86_64-linux.default --accept-flake-config
-          
+        run: |
+          if [[ "${{ matrix.os }}" == "macos-latest" ]]; then
+            nix build .#packages.x86_64-darwin.default --accept-flake-config
+          else
+            nix build .#packages.x86_64-linux.default --accept-flake-config
+          fi
+
       - name: Create Release and Upload Release Assets
         uses: ncipollo/release-action@v1
         with:
-          artifacts: ./result/bin/foliage
+          artifacts: "result/bin/*"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          draft: false