Add KillProcessTree subroutine

include/logvisor/logvisor.hpp

@@ -53,6 +53,13 @@ struct ILogger
                               const wchar_t* format, va_list ap)=0;
 };
 
+/**
+ * @brief Terminate all child processes
+ *
+ * Implicitly called on abort condition.
+ */
+void KillProcessTree();
+
 /**
  * @brief Assign calling thread a descriptive name
  * @param name Descriptive thread name