refactor(yaml): simplify schema

[timreichen]

Changes

• removes SchemaDefinition and replaces it with Schema
• introduces SCHEMA_MAP and removes replaceSchemaNameWithSchemaClass
• uses keyof typeof SCHEMA_MAP instead of hardcoded strings
• replaces optional options with default empty option object for stringify(), parse() and parseAll()

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.98%. Comparing base (b11514e) to head (86010f4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5236      +/-   ##
==========================================
+ Coverage   94.95%   94.98%   +0.02%     
==========================================
  Files         460      460              
  Lines       38073    38059      -14     
  Branches     5549     5543       -6     
==========================================
- Hits        36154    36150       -4     
+ Misses       1878     1868      -10     
  Partials       41       41              

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[iuioiua]

Nice cleanup. Thank you.