Add libdeflate-gzip binary. Add extra maintainer volunteer.

[rhpvorderman]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

Libdeflate does not override the gzip application. See ebiggers/libdeflate#71 .
Therefore we can install it in the conda package. This will make it easier for people to use libdeflate as a drop-in replacement for zlib as they can use the libdeflate-gzip application which is much faster.

I also volunteered as a maintainer for this package and added the LICENSE file as it did not seem to be included. (But this might be me not understanding the packaging correctly).

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[rhpvorderman]

@conda-forge-admin, please rerender

[github-actions]

Hi! This is the friendly automated conda-forge-webservice.
I tried to rerender for you, but it looks like there was nothing to do.

[hmaarrfk]

Is there any desire in getting this in? It seems like a useful addition.

[hmaarrfk]

I merged this into: #8

Thanks