[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/IServicesProvider.cs

@@ -0,0 +1,110 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using LightInject;
+
+namespace Barotrauma.LuaCs.Services;
+
+/// <summary>
+/// Provides instancing and management of IServices.
+/// </summary>
+public interface IServicesProvider
+{
+    #region Type_Registration
+
+    /// <summary>
+    /// Registers a type as a service for a given interface.
+    /// </summary>
+    /// <param name="lifetime"></param>
+    /// <param name="lifetimeInstance"></param>
+    /// <typeparam name="TSvcInterface"></typeparam>
+    /// <typeparam name="TService"></typeparam>
+    void RegisterServiceType<TSvcInterface, TService>(ServiceLifetime lifetime, ILifetime lifetimeInstance = null) where TSvcInterface : class, IReusableService where TService : class, IReusableService, TSvcInterface;
+    
+    /// <summary>
+    /// Registers a type as a service for a given interface that can be requested by name.
+    /// </summary>
+    /// <param name="name"></param>
+    /// <param name="lifetime"></param>
+    /// <param name="lifetimeInstance"></param>
+    /// <typeparam name="TSvcInterface"></typeparam>
+    /// <typeparam name="TService"></typeparam>
+    void RegisterServiceType<TSvcInterface, TService>(string name, ServiceLifetime lifetime, ILifetime lifetimeInstance = null) where TSvcInterface : class, IReusableService where TService : class, IReusableService, TSvcInterface;
+
+    /// <summary>
+    /// Called whenever a new service type for a given interface is implemented.
+    /// Args[0]: Interface type
+    /// Args[1]: Implementing type
+    /// </summary>
+    event System.Action<Type, Type> OnServiceRegistered;
+
+    /// <summary>
+    /// Runs compilation of registered services.
+    /// </summary>
+    public void Compile();
+    
+    #endregion
+
+    #region Services_Instancing_Injection
+
+    /// <summary>
+    /// Injects services into the properties of already instanced objects.
+    /// </summary>
+    /// <param name="inst"></param>
+    /// <typeparam name="T"></typeparam>
+    void InjectServices<T>(T inst) where T : class;
+    
+    /// <summary>
+    /// Tries to get a service for the given interface, returns success/failure.
+    /// </summary>
+    /// <param name="service"></param>
+    /// <param name="lifetime"></param>
+    /// <typeparam name="TSvcInterface"></typeparam>
+    /// <returns></returns>
+    bool TryGetService<TSvcInterface>(out TSvcInterface service) where TSvcInterface : class, IReusableService;
+    
+    /// <summary>
+    /// Tries to get a service for the given name and interface, returns success/failure.
+    /// </summary>
+    /// <param name="name"></param>
+    /// <param name="service"></param>
+    /// <param name="lifetime"></param>
+    /// <typeparam name="TSvcInterface"></typeparam>
+    /// <returns></returns>
+    bool TryGetService<TSvcInterface>(string name, out TSvcInterface service) where TSvcInterface : class, IReusableService;
+    
+    /// <summary>
+    /// Called whenever a new service is created/instanced.
+    /// Args[0]: The interface type of the service.
+    /// Args[1]: The instance of the service.
+    /// </summary>
+    event System.Action<Type, IReusableService> OnServiceInstanced;
+
+    #endregion
+
+    #region ActiveServices
+
+    /// <summary>
+    /// Returns all services for the given interface.
+    /// </summary>
+    /// <typeparam name="TSvc"></typeparam>
+    /// <returns></returns>
+    ImmutableArray<TSvc> GetAllServices<TSvc>() where TSvc : class, IReusableService;
+
+    #endregion
+
+    // Notes: Left public due to the common use of Publicizers
+    #region Internal_Use
+    
+    /// <summary>
+    /// Notes: Internal use only if hosted by LuaCsForBarotrauma. Disposes of all services and resets DI container. Warning: unable to dispose of services held by other objects.
+    /// </summary>
+    void DisposeAndReset();
+
+    #endregion
+}
+
+public enum ServiceLifetime
+{
+    Transient, Singleton, PerThread, Invalid, Custom
+}