refactor(yaml): move state functions inside class

[timreichen]

• moves all state modifying functions inside state class
• modifies generateNextLine() and testImplicitResolving() arguments

Note: The goal is to separate functions that modify the state and functions that do not.

[codecov]

Codecov Report

Attention: Patch coverage is 78.57143% with 69 lines in your changes missing coverage. Please review.

Project coverage is 96.34%. Comparing base (3209065) to head (878cd88).

Files	Patch %	Lines
yaml/_dumper.ts	78.57%	67 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5388      +/-   ##
==========================================
- Coverage   96.34%   96.34%   -0.01%     
==========================================
  Files         458      458              
  Lines       37757    37752       -5     
  Branches     5576     5576              
==========================================
- Hits        36376    36371       -5     
  Misses       1338     1338              
  Partials       43       43              

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[iuioiua]

Thanks