build 0500 - Day-prep cycle

• Added raiders that patrol food (stray cats run away when they see raiders)
• Added new spawn mechanics for raider and stray cats
  • A random number of raiders will spawn within a random interval
  • Raiders will randomly choose foods on the streets to patrol
  • A random number of strays will spawn under a random interval
  • Stray cats will walk to the food items randomly

• Raider now chases the player on sight or flees depending on their "feral mind" stat (stronger feral mind, flees less)
• day night (prep) cycle (done)
  • daytime fight, prep time, progress

• Fixed some issues (stray cats not fleeing)
• Added day-prep cycle
  • There is a time limit for daytime
  • The ending day will go to the prep phase (improve base/hero)
  • Ending the prep phase starts the next day

• Raiders' damaging reputation (not implemented)
  • Instead, they patrol food items and scare away stray cats

Next, I want to implement the prep phase and char/base progress.