Ideal gate assignment missing in Instruction class constructor

[YonatanGideoni]

Bug description

The Instruction class gets the ideal gate as a parameter but does not use it.

To Reproduce

import numpy as np
from c3.signal.gates import Instruction
ideal = np.array([[0., 1.], [1., 0.]])
instr = Instruction(ideal=ideal)

print(instr.get_ideal_gate(dims=[3]))

Expected behavior

Expected output:

[[0.+0.j 1.+0.j]
 [1.+0.j 0.+0.j]]

Real output:

[[1.+0.j 1.+0.j]
 [1.+0.j 1.+0.j]]

Environment

• OS: Windows
• Python Version: 3.8
• c3-toolset Version latest

Additional context

Solution - add self.set_ideal(ideal) at the end of the Instruction constructor. Will do this and open a pull request.