Proof-of-concept rewrite to support automatic styler generation

[ali1234]

At the request of a user, I rewrote this using metaprogramming techniques to support auto-generating many node types from directories of json files, so that you can have eg a Camera Styler or a Lighting Styler. It also supports creating nodes with multiple selection fields, so you can eg combine camera and lighting styles into one node with two drop downs, or any combination you want, eg the Perfection Styler that has almost everything. The code is very much proof-of-concept, and I've also rewritten the loaders to use pathlib and turned templates into a class. I'm not sure where the included json files came from - I got them from the user.

I don't recommend merging this as is, and I'm probably not going to be able to maintain it long-term. I just wanted to let you know it exists, and to gauge interest.

[ali1234]

Also I haven't heavily tested it, especially the advanced nodes.

[TripleHeadedMonkey]

Absolutely amazing work I've only been hands on for a few minutes at this point, but this will replace all of my existing implementations of Prompt Styler. I definitely feel like this is the most comprehensive fork/styler currently available for Comfy.