Add C++ implementation of COBYLA #519

Job	Run time
Build wheels on windows-latest	9m 45s
Build source distribution	14s
Build wheels on macos-latest	5m 58s
Build wheels on ubuntu-latest	3m 55s
Build wheels on windows-2022	8m 13s
Build wheels on macos-26-intel	5m 43s
Build wheels on ubuntu-22.04	3m 55s
	37m 43s

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