Support example tag on structs

[nikicc]

Fixes #32

This PR introduces the support for example tags on structs that can be used to generate examples in Open API.

[codecov[bot]]

Codecov Report

Merging #43 (2ff2d64) into master (e161069) will decrease coverage by 0.23%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #43      +/-   ##
==========================================
- Coverage   96.51%   96.27%   -0.24%     
==========================================
  Files           7        7              
  Lines         946      859      -87     
==========================================
- Hits          913      827      -86     
+ Misses         20       19       -1     
  Partials       13       13              

Impacted Files	Coverage Δ
openapi/spec.go	100.00% <ø> (ø)
openapi/generator.go	94.91% <100.00%> (-0.07%)	:arrow_down:
fizz.go	98.48% <0.00%> (-0.32%)	:arrow_down:
openapi/sort.go	100.00% <0.00%> (ø)
openapi/types.go	100.00% <0.00%> (ø)
openapi/errors.go	100.00% <0.00%> (ø)
openapi/validation.go	100.00% <0.00%> (ø)

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[nikicc]

@wI2L sorry, I re-requested review by mistake 🙈 I'm still working on the changes, will let you know once it's ready again.

[wI2L]

Thank you for your contribution @nikicc. You need to sign your commit before I can merge, tho.

[nikicc]

@wI2L thanks for being so responsive 🚀 I've set the signature now, but you'll need to re-approve, sorry 🙈

Also another quick question: what's the releasing strategy? Could we release this after being merged?

[wI2L]

@nikicc Yes I will push a new tag after I merge.

[wI2L]

Release v0.14.0 published @nikicc.

[nikicc]

@wI2L yeeey 🎉 Thanks!