create a cognates data folder

[mircealungu]

for each pair of languages should have a single folder from-to (no need for to-from because the cognates file is the same). convention: only have the folder for the alphabetically ordered pair of words (e.g. en-nl, and not nl-en)

- cognates.txt -- format: word_from <space> word_to
- blacklist-<expert-id>.txt  -- format: word_from <space> word_to
- rules.txt -- format: pattern_from <space> patter_to
- algo-params.cfg -- simple pairs of key/value (e.g. edit_distance=0.2 [1])

optional:
- experts.txt -- details about the <expert-id>
- params.txt -- params that were used by the candidates generation algorithm when generating cognates

[1] example of config file: https://github.com/zeeguu-ecosystem/Zeeguu-Core/blob/master/default_core.cfg

[mircealungu]

@joelgrondman - I think we need also a whitelist-<expert-id>.txt! Agree?

[joelgrondman]

Ok, so whitelist- instead of cognates.txt or is whitelist intended to be the candidate list?