Add tutorial on seek_mode (#497) #1379

Job	Run time
generate-matrix / generate	5s
Build and Upload Linux wheel / manywheel-py3_9-cpu	3m 45s
Build and Upload Linux wheel / manywheel-py3_10-cpu	4m 49s
Build and Upload Linux wheel / manywheel-py3_11-cpu	3m 56s
Build and Upload Linux wheel / manywheel-py3_12-cpu	4m 45s
Build and Upload Linux wheel / manywheel-py3_13-cpu	3m 51s
Build and Upload Linux wheel / upload / manywheel-py3_9-cpu	20s
Build and Upload Linux wheel / upload / manywheel-py3_10-cpu	21s
Build and Upload Linux wheel / upload / manywheel-py3_11-cpu	20s
Build and Upload Linux wheel / upload / manywheel-py3_12-cpu	19s
Build and Upload Linux wheel / upload / manywheel-py3_13-cpu	14s
install-and-test (3.9, 4.4.2)	1m 46s
install-and-test (3.9, 5.1.2)	1m 45s
install-and-test (3.9, 6.1.1)	1m 51s
install-and-test (3.9, 7.0.1)	1m 45s
	29m 52s

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