Clean duplicated code

[clearloop]

Desc

Here are lots of duplicated code in this repo, for example

• The tests in ArkWorks have 5 copys
• The tests in matter-labs have 2 * 2copys
• The tests in Zcash mixed the tests of matter-labs which should be placed in root/fuzz

Code

The code is ready to be optimized after this week, use traits flexibly, we should construct a Curve trait for all solutions.

//! path `/crates/core/src/lib.rs`
/// Megaclite Curve Trait
pub trait Curve {
    type G1;
    type G2;
    type G1Affine;
    type G2Affine;
    type G1Projective;
    type G2Projective;
    type Fr;
}

Just like what we already did in matter-labs and arkworks, but this time, the trait we'll constructing will adapt all solutions including arkworks, matter-labs and zcash.