Add basic interactivity framework

Myriad/Types/Application/ApplicationCommand.cs

@@ -1,6 +1,4 @@
-using System.Collections.Generic;
-
-namespace Myriad.Types
+namespace Myriad.Types
 {
     public record ApplicationCommand
     {

Myriad/Types/Application/ApplicationCommandInteractionData.cs

@@ -6,6 +6,6 @@
         public string? Name { get; init; }
         public ApplicationCommandInteractionDataOption[]? Options { get; init; }
         public string? CustomId { get; init; }
-        public MessageComponent.ComponentType? ComponentType { get; init; }
+        public ComponentType? ComponentType { get; init; }
     }
 }

Myriad/Types/Application/InteractionApplicationCommandCallbackData.cs

@@ -1,15 +1,14 @@
-using System.Collections.Generic;
-
-using Myriad.Rest.Types;
+using Myriad.Rest.Types;
 
 namespace Myriad.Types
 {
     public record InteractionApplicationCommandCallbackData
     {
         public bool? Tts { get; init; }
-        public string Content { get; init; }
+        public string? Content { get; init; }
         public Embed[]? Embeds { get; init; }
         public AllowedMentions? AllowedMentions { get; init; }
         public Message.MessageFlags Flags { get; init; }
+        public MessageComponent[]? Components { get; init; }
     }
 }