Add canary release action job

[dbast]

As this package is installed into every conda installation, changes have a great impact. A canary release allows to easy test the package by a wider audience before a release is out.

This also converts the recipe:

• to be noarch: the code is noarch and it is noarch on conda-forge, noarch also allows testinng the canary build on exotic platforms like s390x where we annot easily build for via the canary action.
• to derive its package version from git history (like git describe --tags) to generate a unique increasing version per each merged PR.

The code is 1:1 from the conda repo.

Description

Checklist - did you ...

• [ ] Add a file to the news directory (using the template) for the next release's release notes?
• [ ] Add / update necessary tests?
• [ ] Add / update outdated documentation?

[dbast]

oh... the tests also build the recipe... {{ GIT_DESCRIBE_TAG }}+{{ GIT_BUILD_STR }} is not defined during the tests... to be fixed somehow

[dholth]

For some reason the build fails with GIT_DESCRIBE_TAG is undefined

[github-actions[bot]]

Hi there, thank you for your contribution!

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed automatically if no further activity occurs.

If you would like this pull request to remain open please:

1. Rebase and verify the changes still work
2. Leave a comment with the current status

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Thanks!