create Default Sharded
Creates a DefaultShardManagerBuilder with recommended default settings.
In addition to the profile settings:
The event manager is set to the (optional) CoroutineEventManager
The intents are set to JDAService.intents.
In addition to the default-configured cache flags, JDAService.cacheFlags are added.
The REST Config is set to getDefaultRestConfig.
You must not change intents, cache flags nor event manager using the builder.