[16.0] [IMP] Add sale order line type

[paradoxxxzero]

Following #1602, here’s a proposal for adding sale order line type to the sale api.

Handled types are product, note, section and in respective modules reward and delivery (shopinvader/odoo-shopinvader-carrier#17)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.02%. Comparing base (6f56cba) to head (55a4483).

Additional details and impacted files

@@            Coverage Diff             @@
##             16.0    #1608      +/-   ##
==========================================
+ Coverage   95.00%   95.02%   +0.01%     
==========================================
  Files         525      528       +3     
  Lines       10876    10916      +40     
  Branches      553      557       +4     
==========================================
+ Hits        10333    10373      +40     
  Misses        386      386              
  Partials      157      157              

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