Implement token list API #4718

Job	Run time
windows (windows-2019, ucrt)	57s
test (3.0, test)	2m 1s
windows (windows-2019, mswin)	1m 14s
test (3.1, test)	1m 58s
windows (windows-2022, ucrt)	54s
windows (windows-2022, mswin)	1m 24s
test (3.2, test)	1m 59s
test (3.3, test)	2m 29s
test (head, test)	2m 0s
test (head, stdlib_test rubocop)	1m 53s
test (3.3, stdlib_test)	2m 12s
test (3.3, test, --enable-frozen-string-literal)	2m 28s
test (3.3, stdlib_test, --enable-frozen-string-literal)	2m 7s
test (3.3, lexer compile confirm_lexer)	3m 4s
test (3.3, rubocop validate test_doc build test_generate_stdlib raap)	2m 23s
	29m 3s

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