Create Prosemirror enrichers

[zithith]

What needs changing?
Add basic enrichers for object data lookup, and potentially some roll options and condition reference.
Use the 5e system as an example.
Lookup enricher format: [[lookup @field]] | [[lookup @field option:1]]{fallback text}}

Fields to Include:

• Item
  • Name
  • Charges
• Linked Actor
  • Name
  • Stats & derived values
  • Type (humanoid/animal/etc)
• Token Name
• Stretch Goal - Target Name
• Out of scope, post 1.0 - obfuscating names?

This will mostly be useful for data entry in the premium modules that provide pre-built Foundry objects. But anything that might need these dynamic fields will benefit (e.g. homebrew).

Describe alternatives you've considered
We could not and just make do with hard coded values and the static descriptions from the book, but this doesn't make for a very "Value-added" product