[Utils] Add xfail sync script

[bob80905]

This PR implements a way to track the XFAILs that have been added to the offload test suite.
There are 2 failure cases this script is able to catch.

1. A test that has consistent failures is missing an XFAIL annotation, and should have an XFAIL annotation added.
2. A test that already has an XFAIL annotation is consistently passing, and should have its XFAIL annotation removed.

Here is the output of the script when run:

Addresses #1300
Assisted by: Github Copilot

[bogner]

I'm not really convinced this is useful. Most of the time the first time something fails or xpasses it's pretty obvious what we should do with it, so I expect the frequency with which this gives us any extra information to be low.

[bogner]

I've put up #1303 which I think gives a better overview of what's currently happening and might be sufficient instead of this.

[bob80905]

Talked with Justin offline, I'll close this in favor of
#1303