Add ability to load compiled code in Lua.

[TheModMaker]

Currently the CodeCompiler can save the code to an assembly file, but the only way to load it is to use dynamic loading within Lua code using modules. It would be better to add a method LoadCompiled to the Lua type to load the compiled code.

[TheModMaker]

Under newer .NET frameworks (e.g. .NET Core 3.1+), we can't save dynamically generated assemblies.