Row shading for procedurally generated reference tables

[pavelbraginskiy]

Previously row shading only existed for tables baked into the svgs of record sheet tables.

This pr adds row shading for all the reference tables which are proceduraly generated.

Care was taken to ensure the more unusually laid-out tables are shaded properly, but it's possible I missed something and will likely ask the QA testers to generate record sheets for all sorts of units and make sure they look ok with shading.

Shaded rows look like this:

The example is for vehicles, but all unit types are supported.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.52%. Comparing base (bbb608c) to head (62cbfe4).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##             master   #1560      +/-   ##
===========================================
- Coverage      0.52%   0.52%   -0.01%     
  Complexity       49      49              
===========================================
  Files           265     265              
  Lines         30405   30424      +19     
  Branches       5174    5179       +5     
===========================================
  Hits            160     160              
- Misses        30204   30223      +19     
  Partials         41      41              

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[IllianiCBT]

LGTM