Better documentation on how Diffusion Bee uses Models

Hey devs, I just wanted to make an observation and comment. I've added a number of safetensors models to Diffusion Bee, making it much more versatile. I downloaded these models into a folder on my internal SSD; however, after poking around, it seems that the app has its own hidden folder in the user's Home folder (.diffusionbee) and appears to copy the models into this folder. First, I don't believe that you should be using a hidden folder like this, as it's misleading to folks who don't know how to find "hidden" folders. Secondly, I (and presumably lots of others) have 2 copies of each model, which can really add up in space. It would be great if you could at the very least have a prompt or warning that Diffusion Bee is making its own copies of models already downloaded to your system. It would also be a good idea to not use a hidden folder, especially if one uses additional models for making images.

One last thing- it should be easier to locate and remove history from inside of the app.