Add support for container groups

[Meyer-J]

• Add 'createGroup' and 'dropGroup' commands to create and drop HDI container groups.
• Add the container group name as optional parameter to 'createContainer' and 'dropContainer'.

[cla-assistant]

All committers have signed the CLA.

[jung-thomas]

Thanks so much for the submission. It looks very nice. Let me set aside some time this afternoon (in a few hours) and I'll go through it in detail, merge/test, and if everything looks good I'll cut a new release with this in it.

Thanks,
Thomas Jung

[jung-thomas]

I've created the new version 3.202205.1 and released it to npm:
https://www.npmjs.com/package/hana-cli/v/3.202205.1
Thanks again for the contribution!