Fix build-linux-apps Compile only setup apps

Author: rcitach

.github/workflows/build.yml

@@ -85,7 +85,8 @@ jobs:
           export XMAKE_ROOT=y # Only need to use "--root" in CI
           xmake --version
           source env.sh
-          pushd apps/${{ matrix.app }}
+          pushd apps
+            echo "includes(path.join(path.join(os.scriptdir(), \"${{ matrix.app }}\"), \"xmake.lua\"))" > xmake.lua
             xmake f -a x86_64 --target_os=linux -vyD
             xmake -j$(nproc) -vyD -P .
           popd