Chore: Added helper functions to handle webactions

[iLLiCiTiT]

Changelog Description

Added helper functions to handle webactions token.

Additional info

Both functions are not used with authentication or headers thus they were added to utils.py. It is already used in AYON launcher, but probably should be available in ayon python api.

Testing notes:

1. It is possible to use them only if you trigger webaction, receive the token (requires registering of custom exeuctable storing the token or modification of AYON launcher).
2. Use the functions to get and abort the webaction.