Graphics and Sound update

*3/25/21 updates:

-sound additions: text sound when text is typing (like a typewriter)

-visual additions: 

(1) screen size widened to ~1016 pixels (from 816)

 (2) walls filled in, so 3D environment more continuous when in main office

(3) wall decorations adjusted, added in

(4) additional office room added (empty for now, but explorable)