Integrate Pinning file: Do not error on bad escape in regex pattern

[BigRoy]

Changelog Description

Do not error on bad escape in regex pattern

Additional info

Fixes #63

Testing notes:

1. Configure project roots: XXX (to be defined!)
2. Run a simple Maya USD publish from Maya (e.g. publish a cube)

[Lypsolon]

this should work.
i tested it via testing notes but the testing notes do not state any expectations. so i can only tell you that its not throwing an error.

i know we used to have this re escape in there a while ago but some one flagged it and so i removed it (not sure why that was).

[BigRoy]

Thanks - I'll merge but open the remaining notes as issue because I'm sure the rootless path generation does not work.

[Lypsolon]

Thanks - I'll merge but open the remaining notes as issue because I'm sure the rootless path generation does not work.

yeah we need to "normalize" the input from ayon server as the string in there can be about anything.
good for us is that the usd returns will be the same every time.
so we just need to normalize the input to the Usd standard.