There's a closed pull request on the void-packages repository

Alternative support for iotop; add c-iotop.
https://github.com/void-linux/void-packages/pull/36086

Description:
#### Testing the changes
- I tested the changes in this PR: **YES**

#### New package
- This new package conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements): **YES**

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc

Not sure, if I handled the `alternatives` correctly, so I am open to suggestions; I have tested switching back-and-forth and using both with no issues.