Expose Lint for AliasDb (#81579)
This helps external users (e.g., me) to write their graph fuser
and passes. Otherwise, uses of AliasDb could throw when calling
Lint.
Fixes #79963
@davidberard98, please take a look. Thank you!
Pull Request resolved: https://github.com/pytorch/pytorch/pull/81579
Approved by: https://github.com/davidberard98
