Forwards compatible config

[iLLiCiTiT]

Forwards compatible changes for Pype 3.

Changes

• tools are split by slash "/" before loading of tool's environments
  • this is because tools are stored with slash in Pype 3 where separate tool's group name and tool's variant name (See in PR )

🏴	this depends on
pype	ynput/OpenPype#1197
pype-config	ynput/pype-config#105

[hound]

Some files could not be reviewed due to errors:

Traceback (most recent call last):

Traceback (most recent call last):
  File "/home/linters/.local/bin/flake8", line 5, in 
    from flake8.main.cli import main
ModuleNotFoundError: No module named 'flake8'