[Milestone] PackageManagementService completed.

- ContentPackageInfoLookup Service completed.
- Implemented ModConfigService.cs
- Implemented some of the resource processors.

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Services/PackageListRetrievalService.cs

@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+
+namespace Barotrauma.LuaCs.Services;
+
+public sealed class PackageListRetrievalService : IPackageListRetrievalService
+{
+    public void Dispose()
+    {
+        // stateless service
+        return;
+    }
+
+    public void CheckDisposed()
+    {
+        // stateless service
+        return;
+    }
+
+    public bool IsDisposed => false;
+
+    public IEnumerable<ContentPackage> GetEnabledContentPackages()
+    {
+        return ContentPackageManager.EnabledPackages.All;
+    }
+
+    public IEnumerable<ContentPackage> GetAllContentPackages()
+    {
+        return ContentPackageManager.AllPackages;
+    }
+}