add_mul_imm complex numbers

[Gali-StarkWare]

This change is 

[Gali-StarkWare]

• add_mul_imm complex numbers #70 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[shaharsamocha7]

Reviewed 4 of 4 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @Gali-StarkWare)

---

crates/prover/src/utils/mod.rs line 34 at r1 (raw file):

        let two = T::one() + T::one();
        let selector_minus_2 = selector.clone() - two.clone();
        let field_half = (0..30).fold(T::one(), |acc, _| acc.clone() * two.clone());

We should put a TODO to remove it

Code quote:

let field_half = (0..30).fold(T::one(), |acc, _| acc.clone() * two.clone());