Introduces function for exact item placement of food and applies it to each food item in the game
Fixes some food sprites being drawn too far away from the center
Fixes merge conflict
Renames CoM into center_of_mass
Fixes mailman sprite...



West facing sprite was one pixel too far to the left.

Signed-off-by: Decius <deciusreln97@gmail.com>
Merge pull request #5602 from Hubblenaut/food

Grid Placement for Food
Merge pull request #5621 from Decius-R/mailman_fix

Fixes mailman sprite...