feat: download github artifacts and condense comment

[aliciaaevans]

• Get artifacts from GitHubActions for osx-arm64
• Condense packages into one table. It was getting unwieldy with two CI platform sections, let alone three.

Sample comment for bioconda/bioconda-recipes#46775 below:

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Package(s) built are ready for inspection:

Arch	Package	Zip File / Repodata	CI	Instructions
linux-64	bioawk-1.0-he4a0461_11.tar.bz2	LinuxArtifacts.zip	Azure	show You may also use conda to install after downloading and extracting the zip file. From the LinuxArtifacts directory: conda install -c ./packages <package name>
osx-64	bioawk-1.0-h45fc8d7_11.tar.bz2	OSXArtifacts.zip	Azure	show You may also use conda to install after downloading and extracting the zip file. From the OSXArtifacts directory: conda install -c ./packages <package name>
osx-arm64	bioawk-1.0-he4a7b4a_11.tar.bz2	osx-arm64.zip	GitHub Actions	show You may also use conda to install after downloading and extracting the zip file. conda install -c ./packages <package name>
linux-aarch64	bioawk-1.0-h73052cd_11.tar.bz2	repodata.json	CircleCI	show You may also use conda to install:conda install -c https://output.circle-artifacts.com/output/job/e21c37b3-e61a-45e6-8f59-273ee4d6c4ee/artifacts/0/tmp/artifacts/packages <package name>

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Docker image(s) built:

Package	Tag	CI	Install with docker
bioawk	1.0--he4a0461_11	Azure	show Images for Azure are in the LinuxArtifacts zip file above.gzip -dc LinuxArtifacts/images/bioawk:1.0--he4a0461_11.tar.gz | docker load