Make `Kind::wire_type` public

[slinkydeveloper]

Fix #33

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02 :warning:

Comparison is base (a3a8e9c) 75.48% compared to head (d4f207f) 75.46%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #34 +/- ## ========================================== - Coverage 75.48% 75.46% -0.02% ========================================== Files 31 31 Lines 5226 5226 ========================================== - Hits 3945 3944 -1 - Misses 1281 1282 +1 ``` | [Impacted Files](https://codecov.io/gh/andrewhickman/prost-reflect/pull/34?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Andrew+Hickman) | Coverage Δ | | |---|---|---| | [prost-reflect/src/descriptor/api.rs](https://codecov.io/gh/andrewhickman/prost-reflect/pull/34?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Andrew+Hickman#diff-cHJvc3QtcmVmbGVjdC9zcmMvZGVzY3JpcHRvci9hcGkucnM=) | `89.13% <100.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://codecov.io/gh/andrewhickman/prost-reflect/pull/34/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Andrew+Hickman) 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=Andrew+Hickman). 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=Andrew+Hickman)

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[andrewhickman]

Thanks! I've published 0.11.1 with this change.