[WIP][Autocomplete] Adding morph support for Turbo & overhauling process

[weaverryan]

Q	A
Bug fix?	yes
New feature?	yes
Issues	Fix #1500
License	MIT

This is WIP. The goal is to, during morphing, do both of the following:

1. Prevent morphing from removing any manual DOM changes made by TomSelect (which we want to keep)
2. Notice any changes (e.g. the underlying <option> elements change) that would require a TomSelect "reset" and doing that reset.

There are lot of permutations to get right, especially with (2), like making sure that both single & multiple <select> work as well as TomSelect used on an <input>.

Cheers!