parse-submodules: support recursive parsing

[loqs]

Submodules of submodules are not parsed and added to the sources array and are currently initialized by git -c protocol.file.allow=always submodule update --init --recursive

Related todo lock git submodules.

[Antiz96]

Hi @loqs,

Is this issue still relevant? I'm not sure to understand how it applies to the contrib repo?

[lahwaacz]

@Antiz96 It's about the parse-submodules script 😉

[Antiz96]

Ah thanks! I missed this one for some reason ^^