[feat] Shortcut for full classnames in strategy configuration

[choinek]

from

strategies:
   llama_vision:
      class: text_extract_api.extract.strategies.llama_vision.LlamaVisionStrategy

to

strategies:
   llama_vision:
      class: extract_strategies.llama_vision.LlamaVisionStrategy

[pkarw]

OK, this makes sense however I'm up to change the text_extract_api namespace to api as it's a duplicate of the project name itself and doesn't add any value (and it's too long as for my taste