Feature request: AST-level diff for Python code (and other languages)

[holvi-mikael]

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Current PR review functionality already has an option to ignore whitespace when comparing file contents.

For reviewing Python code changes, an option to "review changes to AST only" would be very helpful.

AST (Abstract Syntax Tree) contains the "real" Python code, i.e. the parts that actually do something, leaving out things like comments and type hints. Python already includes all the tools needed to access and analyse the AST.

As a reference, there is a Python package called astdiff that can be used to achieve something similar on the local computer.