Rhino beetle + default beetle + simplified shooting

Added:

- Rhino Beetle class: charge in and knock everything up

- Default Scarab Beetle class: create a dung ball from the ground

- Simplified shooting mechanic without a charge bar. Just aim and release

- Gave the map more verticality to promote gliding

- Spawn dung balls based on the team size (team of 5 will spawn 3 dung balls on each side)

- Magic mushroom spores

Fixed:

- Made scuffles feel more consistent and less laggy

- Made holding sprint work properly and only start sprinting once full

- Equalize beetle and ball forces when applied