[Improvement] Supports monitoring of some timing threads and interrupt operations of some threads

[wenyh1]

• Supports 'Timer' and 'TimerScheduler' threads to automatically observe whether hang is suspected
• Supports print, kill, and recover operations for some threads inside dble:
  -- thread @@print [name='?'];
  -- thread @@Kill [name|poolname=?];
  -- thread @@recover [name|poolname='?'];

see: doc