Specify QM cluster name

[stavros11]

Allow specifying the cluster name used in the QuantumMachinesManager to support multiple cluster configurations.

*TII note: This is needed to use qw5q_platinum with the second OPX1000 cluster, which is connected to the same router as the first one.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 52.56%. Comparing base (b929bac) to head (ef67c2c).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qibolab/_core/instruments/qm/controller.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1149      +/-   ##
==========================================
- Coverage   52.60%   52.56%   -0.04%     
==========================================
  Files          71       71              
  Lines        3173     3175       +2     
==========================================
  Hits         1669     1669              
- Misses       1504     1506       +2     

Flag	Coverage Δ
unittests	52.56% <0.00%> (-0.04%)	⬇️

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[alecandido]

Other than the mentioned docs, I have nothing to amend. Thanks :)