Shooting socket

[polyccon]

#2, #4, #11, #14

• deleted obj6 from cubes.js and init.js
• moved create bullet logic from letsMove.js to another file getBullet.js
• exported raycaster as a global variable in a new file getRaycaster.js
• deleted shoot.js as it wasnt used
• added logic for bullet sockets in src/socket.js, animate.js and server/socket.js
• added otherBullets file which creates an object that stores all the bullet data.
• testobject.js was created to test rendering but it's not used currently in the code

In it's current state the sockets are fully functional and avatars and bullets are rendering in all other clients, but we need to correct the bullet position so that it appears in the right place in the other clients. Also there is a bug in the avatar creation as they don't get deleted appropriately and in the window you can see more avatars than the number of clients connected.
@rebecacalvoquintero