[SYCLomatic] Introduce `dpct::argmax` and `dpct::argmin` functors #7183

Job	Run time
windows-build	12m 45s
windows-lit	1h 1m 2s
windows-test-user_guide_samples-cpu	1m 2s
windows-test-regressions-cpu	1m 23s
windows-test-samples-cpu	49s
windows-test-api_coverage-cpu	52s
windows-test-behavior_tests-cpu	47s
	1h 18m 40s

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