[Feature] Components V2 (#3065)

* oh well. at least it runs

* well that's some breakings

* all the models (i think)

* barebones builder impl

* commit

* initial take on `WithX` component builder design

* actually usable stuff now

* few more changes

* fixes, changes, syntax sugar

* rework message flags + auto add `ComponentsV2`

* apparently it's also nullable

* fix build

* webhook component supports + builder validations + some xmldoc

* `ResolvedUnfurledMediaItem` + fix missing accessory on sections

* missing xmldoc

* fix modal + whatever change

* yeet unused dep

src/Discord.Net.Rest/API/Common/ButtonComponent.cs

@@ -2,11 +2,14 @@ using Newtonsoft.Json;
 
 namespace Discord.API
 {
-    internal class ButtonComponent : IMessageComponent
+    internal class ButtonComponent : IInteractableComponent
     {
         [JsonProperty("type")]
         public ComponentType Type { get; set; }
 
+        [JsonProperty("id")]
+        public Optional<int> Id { get; set; }
+
         [JsonProperty("style")]
         public ButtonStyle Style { get; set; }
 
@@ -39,6 +42,7 @@ namespace Discord.API
             Url = c.Url;
             Disabled = c.IsDisabled;
             SkuId = c.SkuId ?? Optional<ulong>.Unspecified;
+            Id = c.Id ?? Optional<int>.Unspecified;
 
             if (c.Emote != null)
             {
@@ -62,6 +66,9 @@ namespace Discord.API
         }
 
         [JsonIgnore]
-        string IMessageComponent.CustomId => CustomId.GetValueOrDefault();
+        string IInteractableComponent.CustomId => CustomId.GetValueOrDefault();
+
+        [JsonIgnore]
+        int? IMessageComponent.Id => Id.ToNullable();
     }
 }