Add contact admin message (for QR code) (#6806)

src/mesh/NodeDB.h

@@ -110,6 +110,8 @@ class NodeDB
     /// we updateGUI and updateGUIforNode if we think our this change is big enough for a redraw
     void updateFrom(const meshtastic_MeshPacket &p);
 
+    void addFromContact(const meshtastic_SharedContact);
+
     /** Update position info for this node based on received position data
      */
     void updatePosition(uint32_t nodeId, const meshtastic_Position &p, RxSource src = RX_SRC_RADIO);