Add same feature as in conda: use_only_tar_bz2: True

[bkreider]

Checklist

• [X] I added a descriptive title
• [X] I searched open requests and couldn't find a duplicate

What is the idea?

Create a setting for only using tar bz2 files like in conda/.condarc: use_only_tar_bz2: True

Why is this needed?

This isn't a common problem, but sometimes it is desirable to force building using only tar.bz2 format conda packages.

What should happen?

A user would set this setting to True and the installer would only use tar.bz2 format conda packages when building the installer.

Additional Context

No response

[jaimergp]

You can export CONDA_USE_ONLY_TAR_BZ2=True for this :)

[github-actions[bot]]

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Thanks!