build(kernel): add optional [kernel] extra for use_kernel=True #3000

Job	Run time
check-types (3.12)	1m 46s
Unit Tests + Kernel (Python 3.14)	3m 54s
check-linting (3.12)	2m 20s
Unit Tests + PyArrow (Python 3.14, default deps)	4m 14s
check-types (3.13)	1m 46s
Unit Tests + Kernel (Python 3.13)	3m 56s
check-linting (3.11)	1m 32s
check-linting (3.13)	1m 31s
Unit Tests (Python 3.9, default deps)	3m 22s
Unit Tests + PyArrow (Python 3.14, min deps)	4m 3s
Unit Tests (Python 3.11, min deps)	3m 48s
Unit Tests + PyArrow (Python 3.10, min deps)	4m 23s
Unit Tests (Python 3.11, default deps)	3m 5s
Unit Tests + PyArrow (Python 3.11, default deps)	3m 49s
Unit Tests (Python 3.12, default deps)	3m 8s
Unit Tests (Python 3.10, min deps)	3m 46s
Unit Tests + PyArrow (Python 3.13, default deps)	4m 15s
Unit Tests (Python 3.13, default deps)	3m 56s
check-linting (3.10)	1m 33s
Unit Tests + PyArrow (Python 3.12, default deps)	3m 48s
Unit Tests + Kernel (Python 3.11)	3m 50s
Unit Tests + PyArrow (Python 3.11, min deps)	4m 22s
Unit Tests (Python 3.14, min deps)	3m 22s
check-types (3.11)	1m 33s
Unit Tests (Python 3.14, default deps)	3m 15s
Unit Tests (Python 3.9, min deps)	3m 44s
Unit Tests + PyArrow (Python 3.10, default deps)	3m 58s
Unit Tests (Python 3.10, default deps)	3m 14s
Unit Tests + Kernel (Python 3.10)	4m 4s
Unit Tests + PyArrow (Python 3.9, min deps)	4m 31s
check-linting (3.9)	1m 41s
check-linting (3.14)	1m 34s
check-types (3.9)	1m 50s
Unit Tests + PyArrow (Python 3.9, default deps)	4m 0s
Unit Tests + Kernel (Python 3.12)	3m 58s
check-types (3.10)	1m 51s
check-types (3.14)	2m 6s
	1h 56m 48s

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