inPaths

inPaths for the mounted inPaths.graderHostRoot and corresponding inPaths.envHostRoot, serves for data input outPathRoots for the mounted outPaths.graderHostRoot and corresponding outPaths.envHostRoot, serves for data output where Runner.Context.outPaths is outPathRoots appended with the name, such that this is specific to a runner instance

TODO: add mntPaths: MountedPaths // @param mntPaths for the mounted mntPaths.graderHostRoot and corresponding mntPaths.envHostRoot, serves for additional reference input