Added texture for bat and dragon + put all the bat files in a folder

projet-code/scenes_inf443/base/assets/bat/bat_texture.jpg

projet-code/scenes_inf443/base/assets/bat/batbodyok.obj

projet-code/scenes_inf443/base/assets/bat/batw_texture.jpg

projet-code/scenes_inf443/base/assets/bat/batwingleft.obj

projet-code/scenes_inf443/base/assets/bat/batwingright.obj

...t-code/scenes_inf443/base/assets/dragon/dragon_scales.jpg

projet-code/scenes_inf443/base/src/bats.cpp

projet-code/scenes_inf443/base/src/dragons.cpp