feat: upgrade to .NET 6, refactor everything

Myriad/Gateway/Payloads/GatewayStatusUpdate.cs

@@ -3,23 +3,22 @@ using System.Text.Json.Serialization;
 using Myriad.Serialization;
 using Myriad.Types;
 
-namespace Myriad.Gateway
-{
-    public record GatewayStatusUpdate
-    {
-        [JsonConverter(typeof(JsonSnakeCaseStringEnumConverter))]
-        public enum UserStatus
-        {
-            Online,
-            Dnd,
-            Idle,
-            Invisible,
-            Offline
-        }
+namespace Myriad.Gateway;
 
-        public ulong? Since { get; init; }
-        public ActivityPartial[]? Activities { get; init; }
-        public UserStatus Status { get; init; }
-        public bool Afk { get; init; }
+public record GatewayStatusUpdate
+{
+    [JsonConverter(typeof(JsonSnakeCaseStringEnumConverter))]
+    public enum UserStatus
+    {
+        Online,
+        Dnd,
+        Idle,
+        Invisible,
+        Offline
     }
+
+    public ulong? Since { get; init; }
+    public ActivityPartial[]? Activities { get; init; }
+    public UserStatus Status { get; init; }
+    public bool Afk { get; init; }
 }