Redesign! New tape and new haed

There is a new tape and a new head 😃

Improvements:

• Now the tape moves instead of the head
• Colors in the tape! Visual feedback on the elements of the tape that have a value of 1
• The tape is animated! There are "smooth" transitions
• The current state is displayed in the head too
• Made room for the keybinding cheatsheet
• The head is 100% procedually generated (using vertices), in order to keep the filesize to a minimum

Known bugs:

• When going from "moving right" to "moving left", the animation kinda jumps and it looks awful