Install proper workloads and run on macOS

Author: Cheesebaron

.github/workflows/build.yml

@@ -12,18 +12,25 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: macOS-12
 
     steps:
     - uses: actions/checkout@v3
+
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
       with:
         dotnet-version: 6.0.x
+
+    - name: Install .NET Workloads
+      run: dotnet workload install ios maccatalyst
+
     - name: Restore dependencies
       run: dotnet restore
+
     - name: Build
       run: dotnet build Cirrious.FluentLayout/Cirrious.FluentLayouts.Touch.csproj --no-restore
+
     - name: Upload a Build Artifact
       uses: actions/[email protected]
       with: