Minor enhancements

[vanga]

• Give an option to set clip model in "filter"
• Add a note about executable file location of clip-retrieval
• Add defaults to knn-service endpoint attributes.

[rom1504]

Could you fix the lint ? (Run make black lint)

[vanga]

Hi, Yes, that's what I have been trying to find out which linting rule is failing. I have just been able to figure it out by running black locally.