Add input/output formats

[jmattheis]

See #77

[codecov]

Codecov Report

Attention: Patch coverage is 96.38009% with 8 lines in your changes missing coverage. Please review.

Project coverage is 96.48%. Comparing base (4f99aca) to head (b8d3708).

Files	Patch %	Lines
comments/parse_docs.go	89.47%	3 Missing and 3 partials ⚠️
config/method.go	92.59%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #149      +/-   ##
==========================================
- Coverage   96.59%   96.48%   -0.12%     
==========================================
  Files          46       46              
  Lines        2115     2217     +102     
==========================================
+ Hits         2043     2139      +96     
- Misses         50       53       +3     
- Partials       22       25       +3     

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