Global and Local Inheritance

[ShindouMihou]

Adds support for global and local inheritance which will help reduce code duplication by enabling commands to inherit properties from a parent, for example, when you want all commands to be disabled in private messages then you can just write up a global command properties such as:

object GlobalCommandProperties {
   val enabledInDms = false;
}

And add the following line to your configuration:

Nexus.configure {
    this.global.inheritance = GlobalCommandProperties
}

All commands should then inherit the enabledInDms property.

This also includes support for @Share properties which will allow interceptors (middlewares, afterware) to be able to access the property. You can also write up the inheritance to only a specific command by including the @Inherits annotation, such as example:

@Inherits(GlobalCommandProperties::class)
object SomeCommand {
   val name = "ping"
   val description = "Hello"

   fun onEvent(event: NexusCommandEvent) {}
}

It should make the command disabled for private messages as well.