Initial PhoneAPI rate-limiting of messages on certain ports (#4756)

src/mesh/PhoneAPI.h

@@ -2,8 +2,10 @@
 
 #include "Observer.h"
 #include "mesh-pb-constants.h"
+#include "meshtastic/portnums.pb.h"
 #include <iterator>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 // Make sure that we never let our packets grow too large for one BLE packet
@@ -48,6 +50,9 @@ class PhoneAPI
 
     uint8_t config_state = 0;
 
+    // Hashmap of timestamps for last time we received a packet on the API per portnum
+    std::unordered_map<meshtastic_PortNum, uint32_t> lastPortNumToRadio;
+
     /**
      * Each packet sent to the phone has an incrementing count
      */
@@ -99,6 +104,11 @@ class PhoneAPI
      */
     virtual bool handleToRadio(const uint8_t *buf, size_t len);
 
+    /**
+     * Send a (client)notification to the phone
+     */
+    virtual void sendNotification(meshtastic_LogRecord_Level level, uint32_t replyId, const char *message);
+
     /**
      * Get the next packet we want to send to the phone
      *