adjusted: font constant names, font range conditions

[jdlcdl]

Description

Adjustments for pr_446:

• inclusive codepoint range checks for chinese range, then korean range, maybe more in the future?
• constant naming conventions inherited from odudex's MaixPy support for asian langs.

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

[codecov-commenter]

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Additional details and impacted files

@@             Coverage Diff              @@
##             wonder_mv      #43   +/-   ##
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  Coverage             ?   93.33%           
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  Files                ?       60           
  Lines                ?     7422           
  Branches             ?        0           
============================================
  Hits                 ?     6927           
  Misses               ?      495           
  Partials             ?        0           

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[odudex]

Thank you Jean!