There is an updated pull request by tranzystorek-io against master on the void-packages repository

https://github.com/tranzystorek-io/void-packages bzip2-pkgconfig
https://github.com/void-linux/void-packages/pull/40468

bzip2-devel: add pkgconfig file
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Adapted from [Arch Linux](https://github.com/archlinux/svntogit-packages/commit/e2cc08098f31fc7110131782626d22939731b7d5)

Context: upstream has been unresponsive about requests for pkgconfig files in the past, but Arch and Alpine include their own, at least.
Also, the experimental future development project added the file back in 2019: https://gitlab.com/bzip2/bzip2/-/commit/70ec984159c8263fdd4aac7c4670977aff0fe5b3

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

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A patch file from https://github.com/void-linux/void-packages/pull/40468.patch is attached