[MegaChurch Tycoon] Spice Market

[AhoyLemon]

• As referenced in docs\megachurch.md
• [x] Build a UI for buying/taking spice
• [x] Build the logic for buying/taking spice

Notes:

• You MUST do all the spice you buy that day.
• Inform the user of the amount they need to not have withdrawl
• MAYBE: Inform the user they get bonuses for taking more
• This UI should be accessible from 1 of 2 places
  1. The end of day screen
  2. The sermon selection screen