Add `--detail` option to rbs diff #4085

Job	Run time
windows (windows-2019, ucrt)	1m 34s
test (master-nightly-focal, test)	2m 25s
windows (windows-2019, mswin)	1m 33s
test (master-nightly-focal, stdlib_test)	2m 18s
windows (windows-2022, ucrt)	1m 4s
windows (windows-2022, mswin)	1m 33s
test (master-nightly-focal, rubocop validate test_doc build test_generate_stdlib)	2m 14s
test (master-nightly-focal, lexer confirm_lexer)	3m 18s
test (master-nightly-focal, lexer compile)	3m 15s
test (3.2-dev-focal, test)	2m 5s
test (3.2-dev-focal, stdlib_test)	1m 55s
test (3.2-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 1s
test (3.2-dev-focal, lexer confirm_lexer)	3m 10s
test (3.2-dev-focal, lexer compile)	3m 23s
test (3.1-dev-focal, test)	2m 29s
test (3.1-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 10s
test (3.1-dev-focal, lexer confirm_lexer)	3m 21s
test (3.1-dev-focal, lexer compile)	3m 23s
test (3.0-dev-focal, test)	2m 22s
test (3.0-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 11s
test (3.0-dev-focal, lexer confirm_lexer)	3m 29s
test (3.0-dev-focal, lexer compile)	3m 25s
	54m 38s

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