Add preliminary support for buttons

PluralKit.Bot/Handlers/InteractionCreated.cs

@@ -0,0 +1,34 @@
+using System.Threading.Tasks;
+
+using Autofac;
+
+using Myriad.Gateway;
+using Myriad.Types;
+
+namespace PluralKit.Bot
+{
+    public class InteractionCreated: IEventHandler<InteractionCreateEvent>
+    {
+        private readonly InteractionDispatchService _interactionDispatch;
+        private readonly ILifetimeScope _services;
+        
+        public InteractionCreated(InteractionDispatchService interactionDispatch, ILifetimeScope services)
+        {
+            _interactionDispatch = interactionDispatch;
+            _services = services;
+        }
+
+        public async Task Handle(Shard shard, InteractionCreateEvent evt)
+        {
+            if (evt.Type == Interaction.InteractionType.MessageComponent)
+            {
+                var customId = evt.Data?.CustomId;
+                if (customId != null)
+                {
+                    var ctx = new InteractionContext(evt, _services);
+                    await _interactionDispatch.Dispatch(customId, ctx);
+                }
+            }
+        }
+    }
+}