Allow to provide a set of Team Roles, to be added to the owner array

[C0D3-M4513R]

Depends on serenity-rs/serenity#2859
Ref.:

• https://serenity-rs.github.io/poise/current/poise/structs/struct.FrameworkOptions.html#structfield.initialize_owners
• https://discord.com/developers/docs/topics/teams#team-member-roles-team-member-role-types

It would be nice, if I could just specify a set/list of Team Roles.
Every member of the owning Team, with one of those roles would get added to the internal owner list.

Also it would be nice, if there was an option to only consider accepted Team Members for the default initialization.

e.g. Http::get_current_application_info() -> If a Team, get Team Members -> Filter to only Accepted Team Members -> Filter to only Admins/Developers.