text: Title: [Feature] txtai as a proxy like nboost 
  Body: Hi,
  
  Hope you are all well !
  
  I was wondering if we can use **txtai** like [nboost](https://github.com/koursaros-ai/nboost) as a proxy for elasticsearch or [manticoresearch](https://github.com/manticoresoftware/manticoresearch) ?
  
  i am really interested by an integration to manticoresearch as I wrote https://paper2code.com around this full-text search engine.
  
  Thanks for your insights and inputs about this question.
  
  Cheers,
  X