Add ad-hoc-sub-process-activity rule + Housekeeping

[jarekdanielak]

Proposed Changes

Add a rule to ensure that an Ad-Hoc Sub-Process contains at least one activity.

Related to camunda/camunda-modeler#4811

Bonus: bpmn dependencies bump.

Checklist

To ensure you provided everything we need to look at your PR:

• Brief textual description of the changes present
• Visual demo attached
• Steps to try out present, i.e. using the @bpmn-io/sr tool
• Related issue linked via Closes {LINK_TO_ISSUE} or Related to {LINK_TO_ISSUE}

[nikku]

Looks great 👏

[nikku]

Question: Why don't we call this rule ad-hoc-sub-process, mirroring the companion bpmnlint rule?

==> I'll prepare a PR.

[barmac]

Question: Why don't we call this rule ad-hoc-subprocess, mirroring the companion bpmnlint rule?

==> I'll prepare a PR.

or even adhoc-subprocess ;)

[nikku]

or even adhoc-subprocess ;)

Well, we already chose our name via prior art. In bpmnlint, we refer to the thing as sub-process, hence ad-hoc-sub-process is OK, I think.

[nikku]

In this library we are of course 🤣 inconsistent, but majority of rules refers to sub-process over subprocess.

[nikku]

Follow-up PR: #190.

[nikku]

Released the package as v2.32.0.