v1.1.0

• Add Client.create_task to make it easier to create "fire and forget" tasks.
• Add Client.is_started and Client.wait_until_started for more convenient lifecycle management.
• Add the ability to pass an already existing injector instance to Client via the injector= kwarg. If not passed, a new injector will be created by default, like before.
• Set the client as a type dependency upon instantiation.
• Stabilize Context.issued_response. This property returns a boolean that is True if the underlying interaction has already received an initial response.
• Fix hikari.User | hikari.Role | None not being parsed as mentionable option.
• Fix edgecase where options defaulted to None would be ignored in Python 3.10.