Add DeepSeek models

[kriskwiatkowski]

DeepSeek is way cheaper than other models. Would be interesting to add possibility to integrate DeepSeek.

[tmseidel]

@kriskwiatkowski DeepSeek has an OpenAI and Anthropic compatible Rest-API, so it already should work with the current feature-set, simply create an AI-Integration, choose as provider openAI and set the properties you can find on DeepSeek's API website -> https://api-docs.deepseek.com/

Would like to hear if that's working for you...

[kriskwiatkowski]

@tmseidel let me try
BTW: This project is really good stuff! Amazing help