Bug fixes & balancing

Fixed 

1. AI pathfinding through some walls.
2. Camera not detecting some objects of interest.
3. Some cameras not having post processing
4. Camera viewmodel breaking fov
5. Infinite loading screen after dying
6. Animations not playing
7. Sound not playing when detected by Bacteria

Balance and improvements

1. Bacteria enemies run 15% faster
2. Kill range decreased for Bacteria
3. Player starts with two more energy bars and an extra battery
4. More food and batteries to be found in the map
   
5. More UI guide messages
   
6. Food gives 70 energy instead of 50.

New features

1. Main menu added
   
2. Checklist for how many things you've photographed in the UI instructions
3. Walking and sprinting sounds for player