Refactor Cayenne LPP parsing with error handling and logging

- Added error handling and logging to the Cayenne LPP parsing methods to manage malformed data gracefully.
- Improved the structure of the parsing logic for better readability and maintainability.
- Updated the Contact model to include error handling during frame parsing.
- Refactored Channels, Contacts, Map, and Neighbours screens to utilize a new AppBarTitle widget for consistent app bar design.
- Enhanced the BatteryIndicator widget to display SNR information for direct repeaters.
- Introduced SNRUi class for better management of SNR icon and text representation.
- Improved error handling in PathTraceMap and Neighbours screens to log errors appropriately.

lib/connector/meshcore_protocol.dart

@@ -13,12 +13,22 @@ class BufferReader {
   int readByte() => readBytes(1)[0];
 
   Uint8List readBytes(int count) {
+    if (_pointer + count > _buffer.length) {
+      throw RangeError(
+        'Attempted to read $count bytes at offset $_pointer, but only $remaining bytes remaining in buffer of length ${_buffer.length}',
+      );
+    }
     final data = _buffer.sublist(_pointer, _pointer + count);
     _pointer += count;
     return data;
   }
 
   void skipBytes(int count) {
+    if (_pointer + count > _buffer.length) {
+      throw RangeError(
+        'Attempted to skip $count bytes at offset $_pointer, but only $remaining bytes remaining in buffer of length ${_buffer.length}',
+      );
+    }
     _pointer += count;
   }
 
@@ -151,6 +161,7 @@ const int cmdGetContactByKey = 30;
 const int cmdGetChannel = 31;
 const int cmdSetChannel = 32;
 const int cmdSendTracePath = 36;
+const int cmdSetOtherParams = 38;
 const int cmdGetRadioSettings = 57;
 const int cmdGetTelemetryReq = 39;
 const int cmdGetCustomVar = 40;
@@ -212,6 +223,30 @@ const int advTypeRepeater = 2;
 const int advTypeRoom = 3;
 const int advTypeSensor = 4;
 
+// Payload Types
+const int payloadTypeREQ =
+    0x00; // request (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob)
+const int payloadTypeRESPONSE =
+    0x01; // response to REQ or ANON_REQ (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob)
+const int payloadTypeTXTMSG =
+    0x02; // a plain text message (prefixed with dest/src hashes, MAC) (enc data: timestamp, text)
+const int payloadTypeACK = 0x03; // a simple ack
+const int payloadTypeADVERT = 0x04; // a node advertising its Identity
+const int payloadTypeGRPTXT =
+    0x05; // an (unverified) group text message (prefixed with channel hash, MAC) (enc data: timestamp, "name: msg")
+const int payloadTypeGRPDATA =
+    0x06; // an (unverified) group datagram (prefixed with channel hash, MAC) (enc data: timestamp, blob)
+const int payloadTypeANONREQ =
+    0x07; // generic request (prefixed with dest_hash, ephemeral pub_key, MAC) (enc data: ...)
+const int payloadTypePATH =
+    0x08; // returned path (prefixed with dest/src hashes, MAC) (enc data: path, extra)
+const int payloadTypeTRACE = 0x09; // trace a path, collecting SNI for each hop
+const int payloadTypeMULTIPART = 0x0A; // packet is one of a set of packets
+const int payloadTypeCONTROL = 0x0B; // a control/discovery packet
+//...
+const int payloadTypeRawCustom =
+    0x0F; // custom packet as raw bytes, for applications with custom encryption, payloads, etc
+
 // Sizes
 const int pubKeySize = 32;
 const int maxPathSize = 64;
@@ -777,3 +812,22 @@ Uint8List buildZeroHopContact(Uint8List pubKey) {
   writer.writeBytes(pubKey);
   return writer.toBytes();
 }
+
+// Build CMD_SET_OTHER_PARAMS frame
+// Format: [cmd][allowAutoAddContacts][allowTelemetryFlags][advertLocationPolicy][multiAcks]
+Uint8List buildSetOtherParamsFrame(
+  bool allowAutoAddContacts,
+  int allowTelemetryFlags,
+  int advertLocationPolicy,
+  int multiAcks,
+) {
+  final writer = BufferWriter();
+  writer.writeByte(cmdSetOtherParams);
+  writer.writeByte(
+    allowAutoAddContacts ? 0x00 : 0x01,
+  ); // Allow Auto Add Contacts
+  writer.writeByte(allowTelemetryFlags); // Allow Telemetry Flags
+  writer.writeByte(advertLocationPolicy); // Advertisement Location Policy
+  writer.writeByte(multiAcks); // Multi Acknowledgements
+  return writer.toBytes();
+}