tools/kemi: add script to generate mock api for kemi python testing

[tsearle]

Pre-Submission Checklist

• Commit message has the format required by CONTRIBUTING guide
• Commits are split per component (core, individual modules, libs, utils, ...)
• Each component has a single commit (if not, squash them into one commit)
• No commits to README files for modules (changes must be done to docbook files
  in doc/ subfolder, the README file is autogenerated)

Type Of Change

• Small bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would change existing functionality)

Checklist:

• PR should be backported to stable branches
• Tested changes locally
• Related to issue #XXXX (replace XXXX with an open issue number)

Description

[lgtm-com]

This pull request introduces 1 alert when merging 8645d5e into 49e80db - view on LGTM.com

new alerts:

• 1 for Unused import

[henningw]

Thank you!

[miconda]

@tsearle - do not forget to use the component name in the commit message, the second commit in the PR does not have the right format. The alternative is to squash all the commits in one before merging.