Feature request: when cache option is set and files are missing for \inln, run code

[kiryph]

same as #9 which has lead to the addition of this functionality for \runExtCode in commit:

bf864d3 [...] force RunExtCode to run if output does not exist

But I miss it as well for \inln.

MWE:

\documentclass{article}

\usepackage[cache]{runcode}

\begin{document}

\begin{equation}
  \inln{/usr/local/bin/gap -A -b --nointeract -c 'LoadPackage("typeset");'}{x := [ [ 0, 0, 0, 1 ], [ 0, 0, 1, 0 ], [ 0, 1, 0, 0 ], [ 1, 0, 0, 0 ] ];; Typeset(x);}
\end{equation}

\end{document}

With the option [cache] and no cache files, you will get errors for empty lines in equation.