Improve code reuse in fuzz targets

[khieta]

Category

DRT target(s), DRT generator(s)

Describe the feature you'd like to request

Several of our fuzz targets include duplicate code for defining the ABACSettings, FuzzTargetInput, related generators. We should be able to refactor some of this into a separate module to make the targets easier to inspect.

Describe alternatives you've considered

No response

Additional context

No response

Is this something that you'd be interested in working on?

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

[john-h-kastner-aws]

Significant improvement sharing code between validation-drt and validation-drt-type-directed in #621. The same approach should de-duplicate the abac and validation-pbt targets.

[john-h-kastner-aws]

Further improved by #771 and #764. These specificaly address reuse of ABACSettings and FuzzTargetInput as called out in the issue. Looking at all the fuzz target code, I think it's pretty reasonable.

Further specific improvements to the code can be tracked in new issues as we think of them.