Add an option to reset/replace all fields in group in withFieldGroup

[TheMightyDev]

withFieldGroup is a very powerful API! It'd be nice to modify entire group of fields at once - either
replace all of them with another value or reset all fields at once.

Perhaps we can edit new methods on group property obtained in the render property of withFieldGroup:

• group.resetAllFields which will reset all fields to their default values. Alternatively, if no argument is passed to group.resetField it'd reset all fields.
• group.replaceAllFields which will accept a single argument to replace all available fields at one go!

It'd be super helpful in case the groups are fuill.

In my specific use case, my team uses discriminated unions and it's a bit of an hassle to manually delete and add fields on each discriminator key change.

Another suggestion:

• group.deleteAllFields could also be an API or if no argument is passed to group.deleteField it'd delete all fields

[LeCarbonator]

Sounds like alright ideas and good use cases! Shouldn't be that hard to implement either.

[kusiewicz]

@TheMightyDev

So:

deleteAllFields - delete all fields from the current group instance
resetAllFields - reset all fields to default values

But how replaceAllFields should work? At first it should delete all values, and then set only those that you specified as arguments?

[LeCarbonator]

I would say:

• deleteAllFields - iterate through the field map and call deleteField
• resetAllFields - iterate through field map and call resetField
• replaceAllFields - iterate through field map and call setFieldValue with the matching key of the provided object