Add BitwiseNot

[anurudhp]

No description provided.

[NoureldinYosri]

why do we need this when we have XorK?

[anurudhp]

why do we need this when we have XorK?

Just a convenient bloq to use instead of the less readable XorK(dtype, -1) or XorK(dtype, 2**bitsize-1). And also avoids the detour of computing bits(k) etc.

[NoureldinYosri]

Just a convenient bloq to use instead of the less readable

class XorK:
    ...

    @staticmethod
    def bitwise_not(dtype):
        return ...

[tanujkhattar]

I support having an additional Bloq instead of delagating to XorK. It would also be more readable in diagrams. Classical programming languages also have both Xor and - operators defined, even though one could always write a ^ 2**size - 1 instead of ~a.