Restructuring of the files

Facepunch.Steamworks/Structs/SteamId.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
+
+namespace Facepunch.Steamworks
+{
+	public struct SteamId
+	{
+		public ulong Value;
+
+		public static implicit operator SteamId( ulong value )
+		{
+			return new SteamId { Value = value };
+		}
+
+		public static implicit operator ulong( SteamId value )
+		{
+			return value.Value;
+		}
+
+		public override string ToString() => Value.ToString();
+
+		public uint AccountId => (uint) (Value & 0xFFFFFFFFul);
+
+		public bool IsValid => Value != default;
+	}
+}