Add setup for .NET 8.0 and enable build mode

Author: Dineshpolo

.github/workflows/codeql.yml

@@ -56,7 +56,13 @@ jobs:
       uses: github/codeql-action/init@v4
       with:
         languages: ${{ matrix.language }}
-        #build-mode: ${{ matrix.build-mode }}
+        build-mode: ${{ matrix.build-mode }}
+    - name: setup dotnet
+      uses: actions/setup-dotnet@v5
+      with:
+        dotnet-version: '8.0.x'
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v4
         # If you wish to specify custom queries, you can do so here or in a config file.
         # By default, queries listed here will override any specified in a config file.
         # Prefix the list here with "+" to use these queries and those in the config file.