feature: Passing CustomId matches into contexts (#2136)

* add logic for passing the wild card captures into the context

* move concrete impl of IRouteSegmentMatch to internal

* Apply suggestions from code review

Co-authored-by: Quin Lynch <49576606+quinchs@users.noreply.github.com>

* fix build errors

* Apply suggestions from code review

Co-authored-by: Armano den Boef <68127614+Rozen4334@users.noreply.github.com>

Co-authored-by: Quin Lynch <49576606+quinchs@users.noreply.github.com>
Co-authored-by: Armano den Boef <68127614+Rozen4334@users.noreply.github.com>

src/Discord.Net.WebSocket/Interactions/SocketInteractionContext.cs

@@ -1,11 +1,13 @@
 using Discord.WebSocket;
+using System.Collections.Generic;
+using System.Collections.Immutable;
 
 namespace Discord.Interactions
 {
     /// <summary>
     ///     Represents a Web-Socket based context of an <see cref="IDiscordInteraction"/>.
     /// </summary>
-    public class SocketInteractionContext<TInteraction> : IInteractionContext
+    public class SocketInteractionContext<TInteraction> : IInteractionContext, IRouteMatchContainer
         where TInteraction : SocketInteraction
     {
         /// <summary>
@@ -36,6 +38,9 @@ namespace Discord.Interactions
         /// </summary>
         public TInteraction Interaction { get; }
 
+        /// <inheritdoc cref="IRouteMatchContainer.SegmentMatches"/>
+        public IReadOnlyCollection<IRouteSegmentMatch> SegmentMatches { get; private set; }
+
         /// <summary>
         ///     Initializes a new <see cref="SocketInteractionContext{TInteraction}"/>. 
         /// </summary>
@@ -50,6 +55,13 @@ namespace Discord.Interactions
             Interaction = interaction;
         }
 
+        /// <inheritdoc/>
+        public void SetSegmentMatches(IEnumerable<IRouteSegmentMatch> segmentMatches) => SegmentMatches = segmentMatches.ToImmutableArray();
+
+        //IRouteMatchContainer
+        /// <inheritdoc/>
+        IEnumerable<IRouteSegmentMatch> IRouteMatchContainer.SegmentMatches => SegmentMatches;
+
         // IInteractionContext
         /// <inheritdoc/>
         IDiscordClient IInteractionContext.Client => Client;