hitbox improvements

• By opening this merge request, you agree to release your code and all other changes under the GPL 3 license and to abide by the terms set by this license.

• Significant changes of this merge request have been added to the changelog.

• Fixed some hitboxes that were just completely weird (like Rock Snappers)

• Widened/enlarged some hitboxes to make aiming easier for bow users

• Added hitboxes for some entities that were missing

• Made a few other hitboxes fit the models a little better in my opinion