build(kernel): add optional [kernel] extra for use_kernel=True #2999

Job	Run time
Unit Tests + Kernel (Python 3.11)	4m 18s
check-types (3.14)	2m 6s
check-types (3.13)	1m 42s
Unit Tests (Python 3.9, default deps)	3m 24s
check-types (3.9)	1m 49s
Unit Tests + PyArrow (Python 3.14, min deps)	4m 0s
Unit Tests (Python 3.14, default deps)	3m 18s
Unit Tests (Python 3.11, min deps)	3m 48s
Unit Tests + PyArrow (Python 3.13, default deps)	4m 0s
Unit Tests + PyArrow (Python 3.10, min deps)	4m 20s
Unit Tests + Kernel (Python 3.12)	4m 15s
Unit Tests + PyArrow (Python 3.9, min deps)	4m 26s
Unit Tests + PyArrow (Python 3.9, default deps)	4m 15s
Unit Tests (Python 3.10, default deps)	3m 13s
Unit Tests + Kernel (Python 3.14)	19m 19s
Unit Tests + PyArrow (Python 3.10, default deps)	4m 0s
Unit Tests (Python 3.14, min deps)	3m 18s
Unit Tests + PyArrow (Python 3.11, default deps)	3m 52s
Unit Tests + PyArrow (Python 3.12, default deps)	3m 53s
check-linting (3.14)	1m 31s
check-linting (3.10)	1m 38s
Unit Tests (Python 3.13, default deps)	3m 7s
Unit Tests (Python 3.12, default deps)	3m 8s
check-types (3.12)	1m 47s
Unit Tests + PyArrow (Python 3.11, min deps)	4m 34s
Unit Tests + Kernel (Python 3.10)	4m 20s
Unit Tests (Python 3.9, min deps)	3m 43s
Unit Tests + PyArrow (Python 3.14, default deps)	4m 3s
check-linting (3.11)	1m 30s
check-types (3.10)	1m 48s
check-types (3.11)	1m 32s
Unit Tests (Python 3.11, default deps)	3m 7s
check-linting (3.12)	1m 32s
check-linting (3.9)	1m 43s
Unit Tests (Python 3.10, min deps)	3m 38s
Unit Tests + Kernel (Python 3.13)	4m 14s
check-linting (3.13)	1m 30s
	2h 11m 41s

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