pyinstaller executable unable to load .pyxres file
**Describe the bug**
After getting the pyinstaller building my package I found out that it wouldn't include my `.pyxres` file, even if it was in the same directory. The file only had a few sounds in it.

Output from the terminal:
```
Last login: Thu Dec 10 17:38:29 on ttys006
/Users/desmondweindorf/www/operator/src/dist/app ; exit;
➜  ~ /Users/desmondweindorf/www/operator/src/dist/app ; exit;
pyxel error: cannot open file '/var/folders/dg/_z71_dwd32d46yybz1262cv40000gn/T/_MEIEwYGB8/sounds.pyxres' in 'LoadAsset'

[Process completed]
```

Commenting out the line where I load in the resource file makes everything work fine in the executable. Building on OSX.