[WIP] migrate ARM64 testing to CircleCI

[BenWibking]

Description

This sets up ARM64 CI testing on CircleCI.

In the near future, we will disable the ARM64 CI testing currently on Oracle Cloud, which is harder to maintain and configure.

Example workflow: https://github.com/openPMD/openPMD-api/blob/dev/.circleci/config.yml

Related issues

N/A

Checklist

Before this pull request can be reviewed, all of these tasks should be completed. Denote completed tasks with an x inside the square brackets [ ] in the Markdown source below:

• [ ] I have added a description (see above).
• [ ] I have added a link to any related issues see (see above).
• [ ] I have read the Contributing Guide.
• [ ] I have added tests for any new physics that this PR adds to the code.
• [ ] I have tested this PR on my local computer and all tests pass.
• [ ] I have manually triggered the GPU tests with the magic comment /azp run.
• [ ] I have requested a reviewer for this PR.