Feature Request: Specify relationship_type for attribute/event tags through the API/PyMISP

[crym]

Is your feature request related to a problem? Please describe.

I would like to be able to specify the relationship_type on event/attribute tags through the API/PyMISP

Describe the solution you'd like

Added as a optional parameter to https://pymisp.readthedocs.io/en/latest/modules.html#pymisp.PyMISP.tag (in a similar way as the parameter 'local').

For the API:
https://misp.nfcert.org/api/openapi#operation/tagEvent
https://misp.nfcert.org/api/openapi#operation/tagAttribute

Describe alternatives you've considered

Current option is doing it locally in PyMISP:
First first fetch the event and then:

tag = event.add_tag("sometag")
tag.relationship_type = "some-relationship"
misp.update_event(event)

Additional context

No response

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