feat: add `HomotopyContinuationProblem` #606

Job	Run time
Tests (1, QA) / Tests - QA	7m 44s
Tests (1, Python) / Tests - Python	14m 8s
Tests (1, Core) / Tests - Core	11m 52s
Tests (1, Downstream) / Tests - Downstream	40m 32s
Tests (lts, Core) / Tests - Core	7m 16s
Tests (lts, Downstream) / Tests - Downstream	25m 33s
Tests (lts, Python) / Tests - Python	7m 19s
Tests (lts, QA) / Tests - QA	7m 26s
Tests (pre, Python) / Tests - Python	14m 6s
Tests (pre, Downstream) / Tests - Downstream	38m 47s
Tests (pre, Core) / Tests - Core	11m 22s
Tests (pre, QA) / Tests - QA	7m 55s
	3h 14m 0s

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