Allow user to excute other programs

[neko-para]

We can add a menu entry and allow user add items under it. Each item links to a certain command. The command should also support variables like basename, filename, etc.

This feature will partially solve #17, which allows user to excute gdb/gdbgui in the cpeditor.

[ouuan]

Do you mean #17 (comment)? Is it helpful to enable this for things other than debugging?

[neko-para]

Yes, this is the reason I add this issue. But I think this feature could be useful in other aspects.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[coder3101]

Related to #638

[ouuan]

This is moved back to #919.