Update main.yml to set up .NET Core and run Cake build, removing obsolete restore and build steps

Author: epidemicz

.github/workflows/main.yml

@@ -18,8 +18,19 @@ jobs:
       - name: Setup NuGet
         uses: NuGet/setup-nuget@v2
 
-      - name: Restore NuGet Packages
-        run: nuget restore ./source/FreeGameNotifications.sln
+      # - name: Restore NuGet Packages
+      #   run: nuget restore ./source/FreeGameNotifications.sln
 
-      - name: Build
-        run: msbuild ./source/FreeGameNotifications.sln /p:Configuration=Release /p:Platform="Any CPU"
+      # - name: Build
+      #   run: msbuild ./source/FreeGameNotifications.sln /p:Configuration=Release /p:Platform="Any CPU"
+
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "8.0.x"
+
+      - name: Run Cake build
+        run: dotnet cake --target=Default
+
+      - name: Install Cake.Tool
+        run: dotnet tool install --global Cake.Tool