[Milestone] AssemblyLoader completed.

Details:
- Assembly Mgmt Service for loading now a separate interface, not intended for normal use.
- Assembly Loader work; implemented custom dictionary key and table.
- Assembly loading work.
- EventService completed.
- Moved assembly extensions to ModUtils.cs
- Work to event service.
NetworkService work
- Added ImpromptuInterfaces package.
- Networking Service work to support NetVars
- Event Service
- Added assemblies references package for script compilation. Updated Roslyn version for compatibility.
- Package Loading work.
Swap Harmony to HarmonyX
- More refactor conversion to FluentResults.
- Updated StylesService to return Results.
- Refactor of PackageService partially complete.
- Made IService.Reset() required to return a Result.
- Moved plugin/assembly related code to their own folder (same namespace).
- Updated interfaces to reflect the use of Result<T>.
- Partial refactor, incomplete.
- Added 'FluentResults' so we can stop using cursed Exception-based flow control in loading code.
- Added 'OneOf' nuget package: https://github.com/mcintyre321/OneOf
for the implementation of the Optional<T> pattern and complex discrete return types instead of cursed enums (see current AssemblyManager.cs).
- Reapplied old branch changes.

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Data/IPackageDependencyInfo.cs

@@ -1,18 +1,17 @@
-using System.Collections.Immutable;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Immutable;
 
 namespace Barotrauma.LuaCs.Data;
 
-public interface IPackageDependencyInfo : IPackageInfo
+public interface IPackageDependencyInfo : IPackageInfo, 
+    IEqualityComparer<IPackageDependencyInfo>
 {
     /// <summary>
     /// Root folder of the content package.
     /// </summary>
     public string FolderPath { get; }
     /// <summary>
-    /// Name of the package.
-    /// </summary>
-    public string PackageName { get; }
-    /// <summary>
     /// Steam ID of the package. 
     /// </summary>
     public ulong SteamWorkshopId { get; }
@@ -20,6 +19,16 @@ public interface IPackageDependencyInfo : IPackageInfo
     /// The dependency package, if found in the ALL Packages List.
     /// </summary>
     public ContentPackage DependencyPackage { get; }
+    
+    /// <summary>
+    /// This dependency was not found.
+    /// </summary>
+    public bool IsMissing { get; }
+    
+    /// <summary>
+    /// Whether the package is installed from the workshop. False means installation is from local mods.
+    /// </summary>
+    public bool IsWorkshopInstallation { get; }
 }
 
 public interface IPackageDependenciesInfo