ki-shell option to run script in non-interactive mode

[asm0dey]

Sometimes we need to run some script non-interactively (say for some small automation). It would be nice to have the argument for shell to point program source location.

For reference in awk it's -f and --file, in sed it's the same.

Python also has -c option, which allows passing arbitrary expression like python -c "expression"

[neworld]

This will make ki a replacement of kscript