Feature: Custom hf download cache

[KarryCharon]

No description provided.

[KarryCharon]

#28

[flowtyone]

@KarryCharon I think this PR is not necessary, please read here and here

Setting the HF_HOME and HF_HUB_CACHE environment variables should have the same effect as the changes you've made

[Yorha4D]

@flowtyone The situation is like this
A few months ago, ControlNet Aux encountered an issue with caching models from a huggingface, which resulted in the need to download them again every time the cache was executed, even if the model was already prepared locally.
This means that using the huggingface method requires recaching every time, so you have to connect to the huggingface every time, even if there are already files locally.
The current situation should also be the same. The method of using huggingface cannot establish an effective cache, and each time it still needs to be downloaded again. This is also why it is necessary to connect to huggingface every time
Fannovel16/comfyui_controlnet_aux#39

[Yorha4D]

In fact, these codes are only intended to run offline with cache, rather than downloading files like config.json every time I connect to the huggingface
（Perhaps you can try using it in a network free environment to understand the problem with huggingface）

[GrayRabbit-FE]

I tried to use this branch but still failed. Where should I put the local models?