Update OpenType features

[seproDev]

---

name: Pull request
about: Submit a pull request for this project
assignees: fabiocaccamo

---

Describe your changes
Updated features.json with the data from https://learn.microsoft.com/en-gb/typography/opentype/spec/featuretags
apkn and vapk are new. I also added all the cv01-cv99 varients, which were previously omitted. Lastly, I updated the Friendly name to match the official spelling.

Related issue
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Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests for the proposed changes.
• I have run the tests and there are not errors.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.27%. Comparing base (4a2b086) to head (6d1510a).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #239   +/-   ##
=======================================
  Coverage   99.27%   99.27%           
=======================================
  Files           8        8           
  Lines         971      971           
=======================================
  Hits          964      964           
  Misses          7        7           

Flag	Coverage Δ
unittests	99.27% <ø> (ø)

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