message: Load wrapped library early in case of Android
  On newer Android it is not possible to use the
  LD_PRELOAD functionality. The target application
  should be directly linked with the RenderDoc library.
  However in that case we also need to load the
  target library early, so a simple implementation
  for the PosixHookLibrary is added.
diff: #include "os/posix/posix_hook.h"
  +#include <dlfcn.h>
  +
  void PosixHookInit()
  {
  }
  void PosixHookLibrary(const char *name, dlopenCallback cb)
  {
  + cb(dlopen(name, RTLD_NOW));
  }
  