Add support for @ExceptionHandler

[smcvb]

Feature Description

Although "full" support for @ExceptionHandler annotated methods isn't feasible, perhaps there is some other benefit we can provide here.
At the very least, we could cover for IDE warnings stating those methods aren't invoked, as that's typically incorrect.

Current Behaviour

There is zero support for the @ExceptionHandler annotation.

Wanted Behaviour

Investigate if we can provide some support for the @ExceptionHandler annotation.

Possible Workarounds

None.