Support basic single qubit controlled gates

[glanzz]

Description

• The basic single controlled gate sets are supported and used widely used.
• The multicontrolled gates can be considered in future versions

Checklist

• I have performed a self-review of my code.
• I have commented hard-to-understand parts of my code.
• I have made corresponding changes to the public API documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have updated the changelog with any user-facing changes.

[cqc-melf]

I have updated the branch, the checks should now work. One small question left.

Happy to make a release after this is sorted.

[cqc-melf]

Why is CNOT and CPhase not in this list?

[cqc-alec]

And also CZ?

[cqc-alec]

CNOT would not work with the logic below because there is no NOT gate, I think.

[cqc-melf]

You could do X for Cnot?

[cqc-alec]

But line 311 assumes that the name from character 1 onwards is a valid gate name. This does seem like fragile assumption, and I think it would be better to implement this as a dictionary (name of controlled gate --> name of gate).

[cqc-melf]

The checks are still showing a problem, are you looking into that? @glanzz

[glanzz]

Checking