fix(shutdown): kill full child process trees and add synchronous exit handler to force-kill remaining child processes

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartexit',
-  version: '1.1.0',
+  version: '1.1.1',
   description: 'A library for managing graceful shutdowns of Node.js processes by handling cleanup operations, including terminating child processes.'
 }