avoid taking or passing std::string over library interface, fix wrong… #77

Job	Run time
Detect version	4s
Build libdmdutil-win-x64	1m 29s
Build libdmdutil-win-x86	2m 31s
Build libdmdutil-macos-arm64	1m 16s
Build libdmdutil-macos-x64	52s
Build libdmdutil-linux-x64	22s
Build libdmdutil-linux-aarch64	5m 22s
Build libdmdutil-android-arm64-v8a	18s
Build libdmdutil-ios-arm64	33s
Build libdmdutil-tvos-arm64	24s
Build libdmdutil-macos	0s
	13m 11s

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