Add support for new `generative-deepseek` module

[antas-marcin]

This is a new module that will come out with latest v1.36+ Weaviate versions:

Here are the links to proto messages:

• GenerativeDeepseek
• GenerativeDeepseekMetadata

Available settings are:
model - string
maxTokens - *float64
temperature - *float64
frequencyPenalty - float64
presencePenalty - float64
topP - float64
baseURL - string
stop - []string