Package Hook Implementations Separately

[rmorshea]

The underlying hook implementations currently used by IDOM may have applications beyond just this library. For example, the react-ipywidgets by @maartenbreddels could leverage the same hook definitions for its own uses. Additionally, with the advent of technologies like Pyodide it's possible that these hook implementations might even outlive this project.

Work should be started on this after:

• Use context is implemented: https://github.com/idom-team/idom/pull/585
• Use debug value is implemented: https://github.com/idom-team/idom/pull/566
• We rename this package: https://github.com/idom-team/idom/discussions/645