text: Title: Add EfficientLoFTR model
  Body: ### Model description
  
  EfficientLoFTR is an image matching model performing dense matching (contrary to SuperPoint + SuperGlue).
  It is a variant to LoFTR that runs in realtime (at most 40ms for inference).
  The base model performances are ok, but with the soon release of [MatchAnything](https://github.com/zju3dv/MatchAnything) version of EfficientLoFTR, we should have an even better model. 
  
  ### Open source status
  
  - [x] The model implementation is available
  - [x] The model weights are available
  
  ### Provide useful links for the implementation
  
  https://github.com/zju3dv/EfficientLoFTR