Override language

[napolas]

When we override the language by redefining the "types" constants, the terminal reporting as well as the cucumber.json output does not follow as expected.
Although this is not an I18N proper solution, it allows one to override the types constants and even so the reporting tools work in consistent fashion.

[codecov-io]

Codecov Report

Merging #345 into master will increase coverage by 0.85%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #345      +/-   ##
==========================================
+ Coverage   94.99%   95.84%   +0.85%     
==========================================
  Files          57       58       +1     
  Lines        2217     2240      +23     
  Branches      185      187       +2     
==========================================
+ Hits         2106     2147      +41     
+ Misses         73       62      -11     
+ Partials       38       31       -7

Impacted Files	Coverage Δ
pytest_bdd/gherkin_terminal_reporter.py	85.88% <100%> (+0.69%)	⬆️
tests/feature/test_function.py	100% <100%> (ø)
pytest_bdd/feature.py	99.26% <100%> (+3.02%)	⬆️
pytest_bdd/cucumber_json.py	92.94% <100%> (+2.81%)	⬆️
pytest_bdd/parsers.py	87.75% <0%> (+4.08%)	⬆️
pytest_bdd/scripts.py	91.48% <0%> (+4.25%)	⬆️
tests/steps/test_unicode.py	100% <0%> (+6.45%)	⬆️
... and 1 more

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