Fixed ball simulation in level_full and added @MaritalWheat's power bar.

Tagged the ground as Ground in level_full, so you can hit more than once. Changed to better camera script and tweaked it. Realigned the parts in the player object, so it can be moved in a sane way. Updated all of this to the player_with_ball_prefab and synced ball_test with it.

Also added @MaritalWheat's Power bar to Swing mode. That is also in the player_with_ball_prefab. Made sure there is only one assets folder.