[POC] Proof of concept TypeLoader, replacement for Type.GetType()

[Arkatufus]

TypeLoader String to Type Map

• TypeLoader should support the current configuration type naming pattern and be able to match:
  • Fully qualified assembly type name
  • Partial "full assembly name" with "{namespace}.{typeName}, {assemblyName}" string format
  • Partial "full assembly name" with "{typeName}, {assemblyName}" string format
  • Type full name with "{namespace}.{typeName}" format
  • Type name only
  • Arbitrary string to type mapping
• TypeLoader should be able to throw an exception when lookup failed, just like Type.GetType() does.
• TypeLoader should return null when lookup failed, just like Type.GetType() does.

Note that we discard version, culture, and public key metadata. Should we also match these?

[Aaronontheweb]

I'd prefer something simpler and less generic for this purpose.

internal sealed class KnownTypes {
   // ideally, should not need to be concurrent - should all happen at ActorSystem launch
   private readonly Dictionary<string, Func<Mailbox>> typesOfMailboxes;
   public Func<... args for mailbox, Mailbox> GetMailbox (string typeName) {
         
   }
}

We're not going to support type lookup for arbitrary stuff - so no need for a generic abstraction here. It's my preference to make this all as strongly typed, fewest-moving-parts as possible.