[WIP][16.0][IMP] connector extension: refactor export run and minor changes

[KNVx]

· removed adapters woocommerce and wordpress files
· Binder functions are api.model
· _usage in batch exporter/importer renamed
· wrap_binding is deprecated
· Refactored run

[codecov]

Codecov Report

Merging #320 (f4b4b16) into 16.0 (ae35b3a) will increase coverage by 1.37%.
Report is 2 commits behind head on 16.0.
The diff coverage is 35.00%.

@@            Coverage Diff             @@
##             16.0     #320      +/-   ##
==========================================
+ Coverage   28.17%   29.55%   +1.37%     
==========================================
  Files          42       46       +4     
  Lines        1565     1607      +42     
  Branches      366      360       -6     
==========================================
+ Hits          441      475      +34     
- Misses       1123     1131       +8     
  Partials        1        1              

Files	Coverage Δ
connector_extension/components/__init__.py	100.00% <100.00%> (ø)
connector_extension/components/importer.py	36.31% <100.00%> (ø)
connector_extension/components/core.py	70.00% <70.00%> (ø)
connector_extension/components/binder.py	16.96% <20.00%> (+1.00%)	⬆️
connector_extension/common/database.py	46.66% <46.66%> (ø)
connector_extension/components/exporter.py	39.06% <22.91%> (+1.99%)	⬆️

... and 4 files with indirect coverage changes