Allow command aliases to supplied at command creation.

[BartArys]

Currently aliases are supplied when configuring commands:

command(name) {
    alias(aliasOne, aliasTwo, aliasThree)
    
    invoke {
        //....
    }
}

It would be rather simple and more concise to also allow these to be supplied after the name:

command(name, aliasOne, aliasTwo, aliasThree) {
    
    invoke {
        //....
    }
}

I don't think we'll ever use the arguments after a command's name for anything else, so there's not much risk capitalising the space like this.