Add WAS custom node support

[fofr]

One of the most requested custom nodes:
https://github.com/WASasquatch/was-node-suite-comfyui

Some of the nodes in WAS are not supported. Partly to reduce scope of this PR, but also because often the implementation is better elsewhere (eg SAM).

Node Name	Description
BLIP Model Loader	BLIP version 1 not supported by Transformers
BLIP Analyze Image	BLIP version 1 not supported by Transformers
CLIPTextEncode (NSP)	Makes an HTTP request out to a Github file
Diffusers Model Loader	Diffusers is not going to be included as a requirement for this custom node
Diffusers Hub Model Down-Loader	Diffusers is not going to be included as a requirement for this custom node
SAM Model Loader	There are better SAM Loader modules to use. This implementation is not supported
Text Parse Noodle Soup Prompts	Makes an HTTP request out to a Github file
Text Random Prompt	Makes an HTTP request out to Lexica, which is unsupported
True Random.org Number Generator	Needs an API key which cannot be supplied
Image Seamless Texture	img2texture dependency has not been added
Image Rembg (Remove Background)	rembg dependency has not been added because it causes custom nodes to fail
MiDaS Model Loader	WAS MiDaS nodes are not currently supported
MiDaS Mask Image	WAS MiDaS nodes are not currently supported
MiDaS Depth Approximation	WAS MiDaS nodes are not currently supported
Text File History Loader	History is not persisted