* Mesh/Dispatcher: MESH_DEBUG_ and MESH_PACKET_LOGGING now output date-time. (new getLogDateTime() virtual)

* MESH_PACKET_LOGGING now parity with dynamic/file logging (src/dest hashes)

src/Dispatcher.h

@@ -120,6 +120,7 @@ protected:
   virtual void logRx(Packet* packet, int len, float score) { }   // hooks for custom logging
   virtual void logTx(Packet* packet, int len) { }
   virtual void logTxFail(Packet* packet, int len) { }
+  virtual const char* getLogDateTime() { return ""; }
 
   virtual float getAirtimeBudgetFactor() const;
   virtual int calcRxDelay(float score, uint32_t air_time) const;