Add useUndoRedo react hook for component-scoped observables

[hugocxl]

Hi 👋
I noticed there is no specific implementation for undo/redo in component-scoped observables.

This PR adds a hook that keeps track of changes in a local observable and provide a set of functions that allow for navigating the history back and forth.

Example:

function Component() {
   const obs$ = useObservable()
   const { undo, redo, undos$, redos$, history$ } = useUndoRedo(obs$)
   
   return ( ... )
}

The implementation is based on undoRedo from this same lib, but making it compatible with a local-state case.
Not sure if I followed all codebase conventions properly, please let me know otherwise.

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PD: Thanks for this incredible lib ❤️