TODO "golang.org/x/exp/slices".

Places the command being called at the beginning of the args slice for parsing.

Used to move non option(-) arguments to the end of the command, this way positional arguments do not have to go before the optional arguments Arguments do not behave how a unix cli would expect them to: - https://github.com/urfave/cli/issues/427 */.

Gets a string slice from cli.flags so that they can be moved to their required position from anywhere.