[stronghold][bc-linter] add BC linter suppression by `suppress-api-compatibility-check` PR label (#97727)
Adds the ability to suppress BC-linter by adding `suppress-api-compatibility-check` label to the PR.
See #96977 for the context on the BC-linter.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/97727
Approved by: https://github.com/osalpekar