Add support for outline shapes to Text-like glyphs

[mattpap]

This PR adds support other outline shapes than box/rectangle to Text-like glyphs. Shapes are circumscribed onto the bounding box of text boxes, so that all content fit inside those shapes.

Example (various shapes with Text and TeX glyphs):

fixes #8289

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.51%. Comparing base (e61219b) to head (83075b3).
Report is 36 commits behind head on branch-3.5.

❗ Current head 83075b3 differs from pull request most recent head 1aa1529. Consider uploading reports for the commit 1aa1529 to get more accurate results

Additional details and impacted files

@@              Coverage Diff               @@
##           branch-3.5   #13620      +/-   ##
==============================================
+ Coverage       91.57%   92.51%   +0.93%     
==============================================
  Files             326      323       -3     
  Lines           20737    20495     -242     
==============================================
- Hits            18990    18960      -30     
+ Misses           1747     1535     -212     

[ianthomas23]

This is really nice 😍

[kasra1386]

this is very good project

[mattpap]

This is tentatively ready. One big missing part of this PR is accurate hit testing, but I think this could be done separately.