fix:wayland compat (#27)

* fix:wayland compat

```
Oct 18 17:50:20 x270.home.lan ovos-core[13490]: [0.076] [glfw error 65544]: X11: The DISPLAY environment variable is missing
Oct 18 17:50:20 x270.home.lan ovos-core[13490]: GLFW initialization failed
```

* Update __init__.py

__init__.py

@@ -155,7 +155,7 @@ def close_app(self, app: str) -> bool:
 
  def is_running(self, app: str) -> bool:
  """ check if a application is running"""
- if self.match_window(app):
+ if self.wmctrl is not None and self.match_window(app):
  return True
  for p in self.match_process(app):
  return True