Lots of update
New Feature
-Change the focus of Camera Following Player
-A basic Collision Handler, already applied to boss
-Added an invisible wall on the test stage => bullet reflection and decide the size of boss room
-Modified the Homing Shooter
-Added Status for boss
-Created CS boss Skill No.1 in Boss_Test.cs (should be moved to a new script for CS boss later)
-Some tag and layer are modified

Problem should be solved
-Player does not faced to his moving direction while controlling by joystick