feat: optimise file loading

[TomDotBat]

File loading can be optimised by recursively loading the dependencies of the start class.

Eg:
Start - depends on:

• Logger - depends on:
  • LogLevel
• Configuration - depends on:
  • Logger - depends on ~
  • File

Instead of pre-populating packages with empty tables we can load only what we need when we need it, this will also cut down on some memory usage.