Implement Migration of PluginLoader configs (UI is temporary atm)

Add profiles to Config
Error handling for package resolution
Remove debug code from wndproc hook

CringePlugins/Compatability/PluginLoaderConfig.cs

@@ -0,0 +1,70 @@
+using CringePlugins.Config;
+using CringePlugins.Resolver;
+using NuGet.Versioning;
+using System.Collections.Immutable;
+using System.Xml.Serialization;
+
+namespace CringePlugins.Compatability;
+
+[XmlType("PluginConfig")]
+public class PluginLoaderConfig
+{
+    [XmlArrayItem("Id")]
+    public string[] Plugins { get; set; } = [];
+
+    [XmlArrayItem("Profile")]
+    public PluginLoaderProfile[] Profiles { get; set; } = [];
+
+    public PackagesConfig Migrate(PackagesConfig old)
+    {
+        var pluginsBuilder = ImmutableArray.CreateBuilder<PackageReference>();
+        var defaultVersion = new NuGetVersion(1, 0, 0);
+        foreach (var plugin in Plugins)
+        {
+            if (!IsValidId(plugin))
+                continue;
+
+            pluginsBuilder.Add(new PackageReference($"Plugin.{plugin.Replace('/', '.')}",
+                new(defaultVersion)));
+        }
+
+        var profiles = new Dictionary<string, ImmutableArray<PackageReference>>();
+        foreach (var profile in Profiles)
+        {
+            var builder = ImmutableArray.CreateBuilder<PackageReference>();
+            foreach (var plugin in profile.Plugins)
+            {
+                if (!IsValidId(plugin))
+                    continue;
+
+                builder.Add(new PackageReference($"Plugin.{plugin.Replace('/', '.')}",
+                new(defaultVersion)));
+            }
+
+            profiles[profile.Name] = builder.ToImmutable();
+        }
+
+        return old with
+        {
+            Packages = pluginsBuilder.ToImmutableArray(),
+            Profiles = profiles
+        };
+    }
+
+    private static bool IsValidId(string pluginId)
+    {
+        var count = 0;
+        foreach (var c in pluginId)
+        {
+            if (c != '/')
+                continue;
+
+            count++;
+
+            if (count > 1)
+                return false;
+        }
+
+        return count == 1;
+    }
+}