ISSUE 62: Match fields ignore case

[pavelpatrin]

fixes #62

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 :tada:

Comparison is base (a9d78c9) 96.38% compared to head (742ac79) 96.39%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #63 +/- ## ========================================== + Coverage 96.38% 96.39% +0.01% ========================================== Files 24 24 Lines 1465 1470 +5 ========================================== + Hits 1412 1417 +5 Misses 34 34 Partials 19 19 ``` | [Impacted Files](https://codecov.io/gh/jmattheis/goverter/pull/63?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis) | Coverage Δ | | |---|---|---| | [comments/parse\_docs.go](https://codecov.io/gh/jmattheis/goverter/pull/63?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis#diff-Y29tbWVudHMvcGFyc2VfZG9jcy5nbw==) | `95.02% <100.00%> (+0.07%)` | :arrow_up: | | [generator/generate.go](https://codecov.io/gh/jmattheis/goverter/pull/63?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis#diff-Z2VuZXJhdG9yL2dlbmVyYXRlLmdv) | `94.73% <100.00%> (+0.14%)` | :arrow_up: | | [runner.go](https://codecov.io/gh/jmattheis/goverter/pull/63?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis#diff-cnVubmVyLmdv) | `93.10% <100.00%> (+0.24%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jannis+Mattheis)

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