no-name: Name all plays and task blocks

[cidrblock]

Starting to pull in possible rule ideas from the community of practice: redhat-cop/automation-good-practices#64

In #2169 it is suggested that all tasks have a name.

This extends that to cover plays and task blocks.

[ssbarnea]

@cidrblock Here are few things I found so far:

• Despite being even mentioned in an example on https://docs.ansible.com/ansible/latest/collections/ansible/builtin/import_playbook_module.html it seems that the "name" alongside import_playbook is not displayed by ansible when executing. That works against the case of making it required.
• name on blocks do not appear as listing either
• names on normal plays are visible, so for those we want to make it mandatory

WDYT?

[cidrblock]

IMHO, the name for an import playbook and block is equally important, it's unfortunate it doesn't show when the playbook is run, but when looking through the content to better understand what is going on and the original author's intent they can be really useful.

I find import_playbook and a block to be even more complex sometimes than a simple task (e.g. set_fact, debug) , so maybe it's even a little more important to have them here. I'm sure the "next developer" would appreciate the details, I would.