Debriefs overhaul

[dantarian]

Add the following fields to the player debrief:

• Items gained (once Item Tracking working - players should track items used)
• Money Looted/Spent (untaxed money, can be negative)
• GM Notes (direct access rather than having to go to the player)

Update the Debrief creation to clear out attendance records and game applications once successfully saved.

Design document: https://docs.google.com/document/d/1wjPKB3Izb5BbhWQGAtaAxZZURhhbxdzt5eow5pNL-_I/edit?usp=sharing

[dantarian]

GM Notes and money looted/spent already done.