skip no in+out stops, add mode+direction parameters to stoptimes api #253

Job	Run time
openapi-validate	17s
msvc (Debug)	8m 40s
msvc (Release)	8m 40s
formatting	40s
macos (macos-x86_64, On)	8m 57s
linux (linux-amd64-release, linux-amd64)	1m 46s
ui	33s
macos (macos-arm64)	8m 25s
linux (clang-tidy)	5m 0s
linux (linux-sanitizer)	2m 31s
linux (linux-debug, valgrind --suppressions=tools/suppress.txt --leak-check=full --error-exitcode=1)	5m 16s
docker	26s
	51m 11s

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