Chore: Be able to determine if is in AYON launcher process

[iLLiCiTiT]

Changelog Description

Implemented helper function is_in_ayon_launcher_process to determine if current process is AYON launcher.

Additional info

Some functionality should be available only in AYON launcher process but there is not "unified" function that would help to determine that. This function is simplified and can be enhanced in future if we find out there may be other issues.

Testing notes:

1. Function is_in_ayon_launcher_process returns True in AYON launcher process
2. Function is_in_ayon_launcher_process returns False in any other process (e.g. in maya)

from ayon_core.lib import is_in_ayon_launcher_process

print(is_in_ayon_launcher_process())

[kalisp]

Tested in Console and Maya, works as advertised.