Add DoShaping Option

[gerdus]

Prerequisites

• I have written a descriptive pull-request title
• I have verified that there are no overlapping pull-requests open
• I have verified that I am following matches the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules 👮.
• I have provided test coverage for my change (where applicable)

Description

Add option to TextOptions to skip shaping since it's a large percentage of the text layout.
In my case it increased the FPS of my text stress test from a middling 6 FPS to an incredible 10 FPS, the hot path now being almost completely rending.
Feel free to reject if you don't think it would be useful or would complicate support.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86%. Comparing base (91405e3) to head (ca9ed62).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #399   +/-   ##
=====================================
  Coverage     86%     86%           
=====================================
  Files        238     239    +1     
  Lines      15255   15264    +9     
  Branches    2108    2109    +1     
=====================================
+ Hits       13234   13243    +9     
  Misses      1550    1550           
  Partials     471     471           

Flag	Coverage Δ
unittests	86% <100%> (+<1%)	⬆️

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