Set up a network commissioning cluster in linux lock-app. (#17663)

* Set up a network commissioning cluster in linux lock-app.

If we have thread or wifi, use them to set up a network commissioning
cluster.

* Address review comments

examples/lock-app/linux/main.cpp

@@ -17,8 +17,46 @@
  */
 
 #include "AppMain.h"
+#include <app/clusters/network-commissioning/network-commissioning.h>
+#include <platform/Linux/NetworkCommissioningDriver.h>
 
-void ApplicationInit() {}
+using namespace chip;
+using namespace chip::app;
+
+namespace {
+// We support either thread or wi-fi commissioning, not both.  Prefer thread if
+// both are available.
+#if CHIP_DEVICE_LAYER_TARGET_LINUX && CHIP_DEVICE_CONFIG_ENABLE_THREAD
+DeviceLayer::NetworkCommissioning::LinuxThreadDriver sNetworkCommissioningDriver;
+Clusters::NetworkCommissioning::Instance sNetworkCommissioningInstance(0, &sNetworkCommissioningDriver);
+
+void InitNetworkCommissioning()
+{
+    sNetworkCommissioningInstance.Init();
+}
+
+#elif CHIP_DEVICE_CONFIG_ENABLE_WPA
+
+DeviceLayer::NetworkCommissioning::LinuxWiFiDriver sNetworkCommissioningDriver;
+Clusters::NetworkCommissioning::Instance sNetworkCommissioningInstance(0, &sNetworkCommissioningDriver);
+
+void InitNetworkCommissioning()
+{
+    sNetworkCommissioningInstance.Init();
+}
+
+#else // !CHIP_DEVICE_CONFIG_ENABLE_WPA && !(CHIP_DEVICE_LAYER_TARGET_LINUX && CHIP_DEVICE_CONFIG_ENABLE_THREAD)
+
+void InitNetworkCommissioning() {}
+
+#endif // (CHIP_DEVICE_LAYER_TARGET_LINUX && CHIP_DEVICE_CONFIG_ENABLE_THREAD) || CHIP_DEVICE_CONFIG_ENABLE_WPA
+
+} // anonymous namespace
+
+void ApplicationInit()
+{
+    InitNetworkCommissioning();
+}
 
 int main(int argc, char * argv[])
 {