Improve react2hooks pattern

[morgante]

We currently have a pattern for converting React class components to functional components.

This pattern works nicely as a "first draft" but doesn't handle many edge cases and other scenarios. We'd like to do a spike refining it by validating and fixing some cases from open source projects.

Spec

• Run the pattern (as is) on superset repo
• Note the cases that don't work and incrementally add them as additional test scenarios
• Fix the test scenarios

Guidelines

• Please take this incrementally. It's ok to do one PR / test case at a time.

[gitstart-app]

Here is the GitStart Ticket for this issue: https://clients.gitstart.com/grit/7330/tickets/GRIT-228