Expose AYON script editor to Photoshop integration and expose eval method on the Photoshop stub

[BigRoy]

Changelog Description

Expose AYON script editor to Photoshop integration and expose eval method on the Photoshop stub.

Additional review information

Note in certain cases triggering the eval will, e.g.

from ayon_photoshop.api import stub

stub().eval("""
// Create new document
var doc = app.documents.add();
""")

This may hang the script editor, killing the web server process. But often it runs fine.
We may need to figure out how to make it run the calls a different way so it doesn't.

Also, it doesn't seem like the eval call returns any value back to Python. @kalisp any ideas?

Testing notes:

1. Script editor opens
2. Script editor works

[kalisp]

With this commit dab8b38 it works (somehow)

[kalisp]

Should be merged ONLY after #72 (it bumps up extension again)