4bit adder

A 4bit adder made by SpaceCell#0501

Note: The Generator Cell#7431 did not finish he's so SpaceCell was first to make it

```
P2;;;tm;tm;empty,generator,mech_trash,mech_gear,not_gate,cross_mech_gear,xor_gate,and_gate,or_gate,pixel;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;;

```