docs: Added model zoo table in documentation

[fg-mindee]

This PR introduces the following modifications:

• adds a table for text detection models in the documentation (archi, input shape, num of params, recall, precision, fps)
• adds a table for text recognition models (archi, input shape, num of params, accuracy, fps)
• adds a reference to those tables in the README

Successfully merging this PR will close #94

[charlesmindee]

I think we also need to reference the test dataset on which we evaluate the models

[fg-mindee]

Indeed, I left the value blank but I assumed we would mention the test set used above the table since it will have to apply to all entries for easier comparison 👍

[codecov]

Codecov Report

Merging #106 (a45723e) into main (2468769) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #106   +/-   ##
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  Coverage   97.88%   97.88%           
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  Files          28       28           
  Lines         897      897           
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  Hits          878      878           
  Misses         19       19           

Flag	Coverage Δ
unittests	97.88% <ø> (ø)

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