Ability to specify --tag <str> when using create

[seanamos]

Detailed Description

At the moment, the tag that is set on draft release notes when using create is always the name of the specified milestone (-m).

I would like the ability to specify the tag that gets used with a --tag <str> switch.

Context

This is useful when creating a tagged pre-release version. ie x.x.x-beta.x.

At the moment this can be worked around by opening the draft release notes that get created and changing the tag to match the name.