Migrate font generation scripts to OS-side repository

[tjoly-ledger]

Description

Migrate font generation scripts to OS-side repository

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• [X ] Other (for changes that might not fit in any category)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.34%. Comparing base (c58666c) to head (19c39bf).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1417   +/-   ##
=======================================
  Coverage   91.34%   91.34%           
=======================================
  Files          36       36           
  Lines        3997     3997           
  Branches      507      507           
=======================================
  Hits         3651     3651           
  Misses        256      256           
  Partials       90       90           

Flag	Coverage Δ
unittests	91.34% <ø> (ø)

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