misc: small Avalonia project restructure

Moved AppLibrary, Configuration, and PlayReport namespaces to Ryujinx.Systems, add the compat list stuff in the base Ryujinx.Systems namespace.
Moved the compatibility UI stuff to the proper UI view/viewmodel folders.

src/Ryujinx/Systems/AppLibrary/LdnGameData.cs

@@ -0,0 +1,49 @@
+using Gommon;
+using LibHac.Ns;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Ryujinx.Ava.Systems.AppLibrary
+{
+    public struct LdnGameData
+    {
+        public string Id { get; set; }
+        public int PlayerCount { get; set; }
+        public int MaxPlayerCount { get; set; }
+        public string GameName { get; set; }
+        public string TitleId { get; set; }
+        public string Mode { get; set; }
+        public string Status { get; set; }
+        public IEnumerable<string> Players { get; set; }
+
+        public static Array GetArrayForApp(
+            LdnGameData[] receivedData, ref ApplicationControlProperty acp)
+        {
+            LibHac.Common.FixedArrays.Array8<ulong> communicationId = acp.LocalCommunicationId;
+
+            return new Array(receivedData.Where(game =>
+                communicationId.Items.Contains(game.TitleId.ToULong())
+            ));
+        }
+
+        public class Array
+        {
+            private readonly LdnGameData[] _ldnDatas;
+            
+            internal Array(IEnumerable<LdnGameData> receivedData)
+            {
+                _ldnDatas = receivedData.ToArray();
+            }
+
+            public int PlayerCount => _ldnDatas.Sum(it => it.PlayerCount);
+            public int GameCount => _ldnDatas.Length;
+        }
+    }
+
+    public static class LdnGameDataHelper
+    {
+        public static LdnGameData.Array Where(this LdnGameData[] unfilteredDatas, ref ApplicationControlProperty acp) 
+            => LdnGameData.GetArrayForApp(unfilteredDatas, ref acp);
+    }
+}