GCI transpiler

[MatteoRobbiati]

As the title says.

[marekgluza]

qiboteam/qibo#1247

• the group commutators using circuits must be reordered (very helpful answer by Renato 🙏 )
• increasing of accuracy in Hamiltonian simulation of terms of gc must show that the gc with $e^{-itH}$ exponentials is recovered
• tests for checking convergence of Hamiltonian simulated (circuit) composition of gc terms vs numpy gc

[marekgluza]

The transpiler is in use and #52 takes over