Feat: Implement Clamp#145
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Implement a lookup table that allows to clamp an imput value between two powers of two.
It considers bounds to be part of the public input.
It can be useful before feeding a tensor into a small lookup table, to have any outbound input clamped to most extreme indices of the lookup table.
LOWER_BOUND = 2^L
UPPER_BOUND = 2^U
It is left to find an mle with any value, in the mean time it is possible to clamp any value by virtually adding and substracting upper and lower bounds to input to build sumcheck claims. This should not incure any overhead for the prover or verifier (other than performing the addition/substraction).