Add option to include the exported types

[romainbou]

New feature to include the types #94 using the -types argument It replaces the body of structs by an ellipsis "...", similarly to go doc

New types section like this:

Types

type Config

type Config struct { ... }

type GoReadme

type GoReadme struct { ... }

GoReadme enables getting readme.md text from a go package.

Fixes #94

[codecov[bot]]

Codecov Report

Merging #95 into master will decrease coverage by 6.57%. The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master      #95      +/-   ##
==========================================
- Coverage   76.08%   69.51%   -6.58%     
==========================================
  Files           3        3              
  Lines          92       82      -10     
==========================================
- Hits           70       57      -13     
- Misses         14       15       +1     
- Partials        8       10       +2     

Impacted Files	Coverage Δ
goreadme.go	67.34% <33.33%> (-7.66%)	:arrow_down:
godoc.go	53.84% <0.00%> (-8.66%)	:arrow_down:
fetcher.go	85.00% <0.00%> (-2.50%)	:arrow_down:

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[romainbou]

Yes indeed, I added a type to pkg1 and a new pkg8_types just for the types