Allow setting IgnoreExtraArgs on an individual basis (#998)

* Allow setting IgnoreExtraArgs on an individual basis

* Remove passing in the flag as a separate parameter

* VS plz

* Push the RunMode setting out to its own attribute, because fox wants consistency.

Bonus: Removes the need for that godawful 'RunMode.Default'.

* Revert previous commit

* Fox doesn't like module-wide switches 😒

src/Discord.Net.Commands/CommandServiceConfig.cs

@@ -20,11 +20,5 @@ namespace Discord.Commands
 
         /// <summary> Determines whether extra parameters should be ignored. </summary>
         public bool IgnoreExtraArgs { get; set; } = false;
-
-        ///// <summary> Gets or sets the <see cref="IServiceProvider"/> to use. </summary>
-        //public IServiceProvider ServiceProvider { get; set; } = null;
-
-        ///// <summary> Gets or sets a factory function for the <see cref="IServiceProvider"/> to use. </summary>
-        //public Func<CommandService, IServiceProvider> ServiceProviderFactory { get; set; } = null;
     }
 }