RFC: eslint form behavior rules

### This is an RFC for a new feature

### What is the current behavior?

Nothing currently relevant. Also, this functionality would probably be in a new repo.

### What is the expected behavior?

Eslint rules that help enforce/encourage usage of form and field errors and state.

Might look like a rule that enforces using various parts of the form state, such as submitError, hasSubmitError, hasSubmitErrors and having their use enforced in specific children. Example: requiring that a Form has an Alert element child that takes submitError as it's child.

Rules like this will likely be pretty brittle, but I think that may be ok, since even if you have to disable them, they serve to remind you do implement the functionality in your form.

I don't immediately have the knowledge for writing such an eslint rule, but I thought it might be helpful to throw the idea out there, and if someone has a good idea for implementing it maybe it takes off.