affine versioned pairing supporting for BitVM #846
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Description
This PR propose is to give caller an another more option to choose when do pairing. In current implementation, the coefficients of divisor line function is computed through projective coordinates as it's more efficient (than affine coordinates) when computing pairings, while it's not when verifying pairings (recursive snark). As Andrija and Liam stated in 5.2 section of On Proving Pairings.
So for supporting verifying pairings for BN254 in BitVM, I add one more optional method for pairing.
closes: #XXXX
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