test(terms-extraction): Add hurl tests

docs(terms-extraction): Name examples

feat(teeft): Add two routes ...

To take numbers into account (encding digits before treatment, decoding
them after)

feat(terms-extraction): Improve teeft ...

Remove terms:

 - too short

 - too long

 - containing too much
non-alphanumeric characters

Closes #31

feat: add experimental and empirical entrypoint to clean keywords

docs(teeft-fr): Improve example

add terms normalize service

docs(terms-extraction): Fix route in teeft's examples.http ...

The route was the French one, for the English example.

docs(terms-extraction): Add English examples

feat(terms-extraction): Use @ezs/teeft