try to add linux webview support

linux/main.cc

@@ -1,6 +1,8 @@
+#include <webview_cef/webview_cef_plugin.h>
 #include "my_application.h"
 
 int main(int argc, char** argv) {
+  initCEFProcesses(argc, argv);
   g_autoptr(MyApplication) app = my_application_new();
   return g_application_run(G_APPLICATION(app), argc, argv);
 }