[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/Services/_Interfaces/IEventService.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Reflection;
+using Barotrauma.LuaCs.Events;
+using Barotrauma.LuaCs.Services.Compatibility;
+using Barotrauma.LuaCs.Services.Safe;
+
+namespace Barotrauma.LuaCs.Services;
+
+public interface IEventService : IReusableService, ILuaEventService
+{
+    FluentResults.Result SetLegacyLuaRunnerFactory<T>(Func<LuaCsFunc, T> runnerFactory) where T : IEvent<T>;
+    void RemoveLegacyLuaRunnerFactory<T>() where T : IEvent<T>;
+    void SetAliasToEvent<T>(string alias) where T : IEvent<T>;
+    void RemoveEventAlias(string alias);
+    void RemoveAllEventAliases<T>() where T : IEvent<T>;
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="subscriber"></param>
+    /// <typeparam name="T"></typeparam>
+    /// <returns></returns>
+    FluentResults.Result Subscribe<T>(T subscriber) where T : IEvent<T>;
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="subscriber"></param>
+    /// <typeparam name="T"></typeparam>
+    void Unsubscribe<T>(T subscriber) where T : IEvent;
+    /// <summary>
+    /// Clears all subscribers for a given event type and removes any registration to the type.
+    /// </summary>
+    /// <typeparam name="T">The event type.</typeparam>
+    void ClearAllEventSubscribers<T>() where T : IEvent;
+    /// <summary>
+    /// Clears all subscribers lists.
+    /// </summary>
+    void ClearAllSubscribers();
+    /// <summary>
+    /// Invokes all alive subscribers of the given event using the provided invocation factory.
+    /// </summary>
+    /// <param name="action"></param>
+    /// <typeparam name="T"></typeparam>
+    /// <returns></returns>
+    FluentResults.Result PublishEvent<T>(Action<T> action) where T : IEvent<T>;
+}