PositionTracker not working

* PyAutoMonkey version: 0.1.5
* Python version: 3.9.0
* Operating System: Windows 10

### Description

Running PositionTracker() opens the tkinter window (it shouldn't) and the position coordinates are not displayed on the desktop.

### What I Did

```
from automonkey import PositionTracker
PositionTracker()
<automonkey.mouse_tracker.PositionTracker object at 0x000002CA04DFB130>
```
