.🦀 file extension

[CuteistFox]

.cl iz for comon lisp(lots of infuriatim=ng silly perenficeis) and .cr iz for chrystal so why not .🦀

• [ ] merge crablang/crabgo#2
• [ ] replace .rs extensions whith .🦀
• [ ] add .🚂 for trains (see #6🚂)
• [ ] do a cat nap because your done

or

• [ ] wait for a cat to sit on the keyboard
• [ ] then wait for it to do it for u while you take a cat nap