Created class DieParameters (containing unit_die_size, pad_size, outline, die_layer, pads_layer etc).
Now every cell takes a DieParameters in argument instead of a repetitive list of params. It makes the code way clearer when calling cells and simpler for contributors.
Some functions in utility are under this class as they are inherent from the die's parameters.
DieParameters(containingunit_die_size,pad_size,outline,die_layer,pads_layeretc).