feat(input-value): make useInputValue more compatible

[SyMind]

Inspired by https://github.com/react-component/field-form/blob/master/src/utils/valueUtil.ts#L120

[otakustay]

I love this feature, and useInputValue can be generic (default to string) since custom components may provide value and onChange in custom types, and strings can also be literal unions for checkbox and radio

[SyMind]

You are right, with generic is better.

[otakustay]

This is a breaking change since initialValue no longer defaults to empty string, I need some more time to think about it