feat: support root path for moka and mini-moka #1409

Job	Run time
build_all_features	4m 24s
build_all_platforms (ubuntu-latest)	2m 24s
build_default_features (ubuntu-latest)	32s
build_all_platforms (macos-latest)	1m 53s
build_under_wasm	45s
build_default_features (macos-latest)	39s
build_all_platforms (windows-latest)	4m 38s
check_clippy	3m 17s
build_default_features (windows-latest)	1m 13s
check_docs	3m 18s
check_msrv	27s
unit	6m 24s
	29m 54s

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