Retrieve related WFS features from service metadata

[tusbar]

• Removed _featureTypes as it’s not needed anymore.

[codecov]

Codecov Report

Merging #96 into master will decrease coverage by 0.13%.
The diff coverage is 15%.

@@            Coverage Diff             @@
##           master      #96      +/-   ##
==========================================
- Coverage   13.42%   13.28%   -0.14%     
==========================================
  Files          97       98       +1     
  Lines        2183     2190       +7     
==========================================
- Hits          293      291       -2     
- Misses       1890     1899       +9

Impacted Files	Coverage Δ
lib/models/ConsolidatedRecord.js	0% <0%> (ø)	⬆️
lib/jobs/consolidate-record/feature-types.js	0% <0%> (-19.24%)	⬇️
lib/jobs/lookup-wfs/index.js	0% <0%> (ø)	⬆️
lib/jobs/consolidate-record/index.js	0% <0%> (ø)	⬆️
lib/utils/feature-types.js	100% <100%> (ø)

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