Versioning in the Blueprint Group

[SaidBySolo]

Is your feature request related to a problem? Please describe.
I use sanic to make api, and I am using it.

Currently, the url is managed through a blueprint group, if use single blueprints can be versioned, but blueprints cannot be versioned in the case of a group.

If versioning is possible, maintenance will be much more convenient.

Describe the solution you'd like
Can use versioning in the blueprint group.

Additional context

Blueprint.group(example_blueprint, example_blueprint_two, url_prefix="api", version="v1")

[ahopkins]

Great idea. If someone doesn't best me to it, I'll get a PR on this weekend.

[ahopkins]

While we are at it, we should probably also carry thru strict_slashes.