Support some configuration/settings

We should be able to configure the behavior of this extension. Some things that come to my mind:

Filter executables (by name, path, ...?) that should be debugged when they are launched as child processes.
Filter executables (by name, path, ...?) who's children should be debugged.
Enable/disable recursively debugging children of child processes (or specify a recursion depth).
Enable/disable suspension of parent/child processes while we attach the children to the debugger (not sure whether this would be required when the suspension/resuming works robustly).

Ideally we should be able to configure those things in the settings of the VS Code extension.

albertziegenhagel / childdebugger-concord