Scriptloading overhaul (evilfactory#163)

* - Added option to RunConfig.cs for mods to compile with non-publicized assemblies.
- Added default values attrib to RunConfig.cs
- Added thread sleeping to CsPackageManager.Dispose() to give time before generating a strong-ref to check acl unload status.

* - Added PrintWarning to ModUtils.cs
- Made previously unloaded ACLs warning only.
- Made plugins unload after lua script disposal.
- Small code cleanups.
- Cleared acl record references on unloading.
- Made ACL unload run via event hook.

* Made non-pub asm compilation name the same long-a** name in XML, as per Evil's request.

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Plugins/MemoryFileAssemblyContextLoader.cs

@@ -30,12 +30,10 @@ public class MemoryFileAssemblyContextLoader : AssemblyLoadContext
     protected bool IsResolving;   //this is to avoid circular dependency lookup.
     private AssemblyManager _assemblyManager;
     public bool IsTemplateMode { get; set; }
-    public bool IsDisposed { get; private set; }
 
     public MemoryFileAssemblyContextLoader(AssemblyManager assemblyManager) : base(isCollectible: true)
     {
         this._assemblyManager = assemblyManager;
-        this.IsDisposed = false;
         base.Unloading += OnUnload;
     }
 
@@ -159,11 +157,11 @@ public AssemblyLoadingSuccessState CompileAndLoadScriptAssembly(
         if (externMetadataReferences is not null)
             metadataReferences.AddRange(externMetadataReferences);
 
-        // build metadata refs from default where not an in-memory compiled assembly and not the same assembly as supplied.
-        metadataReferences.AddRange(AssemblyLoadContext.Default.Assemblies
+        // build metadata refs from global where not an in-memory compiled assembly and not the same assembly as supplied.
+        metadataReferences.AddRange(AppDomain.CurrentDomain.GetAssemblies()
             .Where(a =>
             {
-                if (a.IsDynamic || string.IsNullOrWhiteSpace(a.Location) || a.Location.Contains("xunit"))
+                if (a.IsDynamic || string.IsNullOrEmpty(a.Location) || a.Location.Contains("xunit"))
                     return false;
                 if (a.FullName is null)
                     return true;
@@ -174,28 +172,7 @@ public AssemblyLoadingSuccessState CompileAndLoadScriptAssembly(
                 .Where(a => !(a.IsDynamic || string.IsNullOrEmpty(a.Location) || a.Location.Contains("xunit")))
                 .Select(a => MetadataReference.CreateFromFile(a.Location) as MetadataReference)
             ).ToList());
-
-        // build metadata refs from ACL assemblies from files/disk.
-        foreach (AssemblyManager.LoadedACL loadedAcl in _assemblyManager.GetAllLoadedACLs())
-        {
-            if(loadedAcl.Acl.IsTemplateMode || loadedAcl.Acl.IsDisposed)
-                continue;
-            metadataReferences.AddRange(loadedAcl.Acl.Assemblies
-                .Where(a =>
-                {
-                    if (a.IsDynamic || string.IsNullOrWhiteSpace(a.Location) || a.Location.Contains("xunit"))
-                        return false;
-                    if (a.FullName is null)
-                        return true;
-                    return !externAssemblyNames.Contains(a.FullName);    // exclude duplicates
-                })
-                .Select(a => MetadataReference.CreateFromFile(a.Location) as MetadataReference)
-                .Union(externAssemblyRefs   // add custom supplied assemblies
-                    .Where(a => !(a.IsDynamic || string.IsNullOrEmpty(a.Location) || a.Location.Contains("xunit")))
-                    .Select(a => MetadataReference.CreateFromFile(a.Location) as MetadataReference)
-                ).ToList());
-        }
-
+
         // build metadata refs from in-memory images
         foreach (var loadedAcl in _assemblyManager.GetAllLoadedACLs())
         {
@@ -275,8 +252,7 @@ protected override Assembly Load(AssemblyName assemblyName)
             //try resolve against other loaded alcs
             foreach (var loadedAcL in _assemblyManager.GetAllLoadedACLs())
             {
-                if (loadedAcL.Acl is null || loadedAcL.Acl.IsTemplateMode || loadedAcL.Acl.IsDisposed) 
-                    continue;
+                if (loadedAcL.Acl is null || loadedAcL.Acl.IsTemplateMode) continue;
 
                 try
                 {
@@ -309,6 +285,5 @@ private void OnUnload(AssemblyLoadContext alc)
         CompiledAssemblyImage = null;
         _dependencyResolvers.Clear();
         base.Unloading -= OnUnload;
-        this.IsDisposed = true;
     }
 }