[16.0][ADD] product_warranty & rma_product_warranty

[AaronHForgeFlow]

Compute warranty based on original move date and invoice date

cc @ ForgeFlow

[codecov-commenter]

Codecov Report

Merging #479 (a560b06) into 16.0 (139340e) will decrease coverage by 0.36%.
The diff coverage is 47.05%.

Additional details and impacted files

@@            Coverage Diff             @@
##             16.0     #479      +/-   ##
==========================================
- Coverage   81.04%   80.68%   -0.36%     
==========================================
  Files         128      134       +6     
  Lines        4822     4873      +51     
  Branches      779      794      +15     
==========================================
+ Hits         3908     3932      +24     
- Misses        701      726      +25     
- Partials      213      215       +2     

Files	Coverage Δ
rma_account_product_warranty/__init__.py	100.00% <100.00%> (ø)
rma_account_product_warranty/models/__init__.py	100.00% <100.00%> (ø)
rma_product_warranty/__init__.py	100.00% <100.00%> (ø)
rma_product_warranty/models/__init__.py	100.00% <100.00%> (ø)
rma_product_warranty/models/rma_order_line.py	55.55% <55.55%> (ø)
..._account_product_warranty/models/rma_order_line.py	25.00% <25.00%> (ø)

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