Create module for converting from SQL to story format files

[oubiwann]

What needs to be preserved:

• in-game changes made to the structure of the world, including:
  • new areas
  • modification of area attributes (e.g., descriptions, new exits, etc.)
  • new NPCs
  • new items

What shouldn't be preserved:

• game-specific state, including:
  • item movement (pick-ups, drops, etc.)
  • character (PC and NPC) placement, attribute changes, etc.
  • creature movements, etc.

That being said, there should be an export feature for player characters ...

Due to the fact that this capability is DB-dependent, the feature was moved from hexagram30/story#5 to this repo. Code will live in hxgm30.store.story.