Add "Additional Random Seeds" to config builder run settings

[DRuggeri]

I noticed that the ability to override, per run, additional random seeds was missing from the config builder. I don't always use the setting, but it's useful for testing lora strengths by varying the base image (in other words: does the result look horrible because the model made it that way, or the lora did? 😆 ). Since all the plumbing was still in place, I figure it just got missed when porting the generator node settings over to the run settings in config builder.

[DRuggeri]

I just pushed another small fix that I thought would be much larger. I had assumed that custom CLIP was not supported, but it turns out that loading a config builder config wasn't detecting the text encoders (another example of array vs string).

While in the neighborhood, I also added support to try loading the clip type from Comfy versus a hardcoded value (noticed that krea2 was missing)