Add user config option to control default reverse_bits value in circuit_drawer

[diemilio]

Summary

Fixes #9150.

Details and comments

This PR adds the option circuit_reverse_bits to the user config file to modify the default behavior of the reverse_bits option in the circuit_drawer. For example, the following configuration in the settings.conf file:

[default]
circuit_drawer = mpl
state_drawer = latex
circuit_reverse_bits = True

the circuit drawer will display a circuit with the most significant bit at the top without explicitly passing the reverse_bits=True option to the draw() method:

from qiskit import QuantumCircuit, QuantumRegister, ClassicalRegister
n = 4
qr = QuantumRegister(n, name='q')
cr = ClassicalRegister(n, name='c')
qc = QuantumCircuit(qr,cr)
qc.h(range(n))
for i in range(n-1,0,-1):
    qc.cx(i,i-1)
qc.barrier()
qc.measure(qr,cr)
qc.draw()

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1 out of 2 committers have signed the CLA.

✅ diemilio
❌ Diego Serrano

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[diemilio]

Closing this because there are some authorship issues with the first few commits. Will fix and submit new PR.