[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/IDataInfo.cs

@@ -0,0 +1,20 @@
+namespace Barotrauma.LuaCs.Data;
+
+/// <summary>
+/// Serves as a compound-key to refer to all resources and information that comes from a specific source.
+/// </summary>
+public interface IDataInfo
+{
+    /// <summary>
+    /// Package-Unique name to be used internally for all representations of, and references to, this information.
+    /// </summary>
+    string InternalName { get; }
+    /// <summary>
+    /// The package this information belongs to.
+    /// </summary>
+    ContentPackage OwnerPackage { get; }
+    /// <summary>
+    /// Used in place of the package data when the OwnerPackage is missing.
+    /// </summary>
+    string FallbackPackageName { get; }
+}