Add step to enable FULL LTO in build workflow

.github/workflows/build.yml

@@ -337,6 +337,9 @@ jobs:
         if: inputs.cache == 'true' && inputs.build_type == 'make'
         uses: ./.github/actions/use-ccache
 
+      - name: enable FULL LTO
+        uses: ./.github/actions/lto
+        
       - name: Build
         uses: ./.github/actions/build
         with: