Support Recursive Assembly Registration

[enisn]

Currently, registration works only Assembly & Dependencies of Assembly.
Let me explain with an example. Let say there is an assembly tree below;

• Assembly Main
  • Assembly A
    • Assembly A.1
    • Assembly A.2
  • Assembly B
    • Assembly B.1
    • Assembly B.2

In the current state, when you call registration in Assembly Main, all types from Assembly Main, Assembly A, and Assembly B will be registered.

• Assembly Main
  • Assembly A
    • Assembly A.1
    • Assembly A.2
  • Assembly B
    • Assembly B.1
    • Assembly B.2

There should be an option to register the entire dependency tree which discovers all assemblies. It's not useful at the moment, each assembly should register its own services but TypeExplorer should have that discovery option.