Hikari-arc

- Fix `arc.utils.global_concurrency` missing a `limit` argument.
- Fix slash subcommands failing to resolve autodefer settings.

- Optimize command syncing by using bulk endpoints for global app commands as well, making it much faster.
- Improve command syncing error messages.
- Fix `Client.listen` and `Plugin.listen` failing to parse event types with generics from function signatures.

- 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.

This marks the **first stable release** of `arc`, meaning that from this point on, the project follows [semantic versioning](https://semver.org/), and no breaking changes will happen (until an eventual 2.0).

- Add [loops](./guides/loops.md). Loops can be used to repeatedly call a given coroutine function with a specific interval or cron set.
- Add [concurrency limiters](./guides/concurrency_limiting.md). Concurrency limiters can be used to prevent users from invoking a command that already has a specific amount of instances running.
- Add `arc.StartedEvent` and `arc.StoppingEvent` to gateway clients to enable managing lifecycle via events.
- Fix command groups always being republished when command syncing.

In additon to these changes, the [documentation](https://arc.hypergonial.com) got a major refresh, adding & extending guides where needed.

- Add `Context.get_option()` to access options outside the command callback in a type-safe manner.
- Add `Client.walk_commands()` and `Plugin.walk_commands()` to iterate over all commands & subcommands of a given type in a type-safe manner.
- Add `CallableCommandProto.display_name`, `SlashCommand.make_mention()`, `SlashSubCommand.make_mention()`.
- Change `Context.respond_with_builder()` to attempt a followup message when the interaction has an initial response and a message builder was passed.
- Remove the `acquire()` method from `LimiterProto` to make it easier to implement custom limiters.
- Split `arc.utils.hooks.RateLimiter` into `arc.utils.RateLimiter` and `arc.utils.hooks.LimiterHook`. This allows `arc.utils.RateLimiter` to be used independently of an arc context object.

- **Breaking:** Re-order OptionParams object parameters. `description=` is now the first & only positional argument. `name=` has been moved to the second parameter and is now keyword-only.
- Add [limiters](./guides/hooks.mdlimiters).
- Add `autodefer`, `default_permissions`, `is_dm_enabled` and `is_nsfw` to client & plugin types. If set, these settings will be applied to all commands added to the client/plugin. They can still however be overridden by individual commands.
- Add `GatewayClientBase` and `RESTClientBase` to aid in creating custom client types. Examples on how to do this have also been added to the repository.
- Fix `InteractionResponse.retrieve_message()` failing due to incorrect assertion.
- Fix subcommands & subgroups unable to have hooks or an error handler.