Add original hop limit to header to determine hops used (#3321)

* Set `hop_start` in header to determine how many hops each packet traveled

* Set hopLimit of response according to hops used by request

* Identify neighbors based on `hopStart` and `hopLimit`

* NeighborInfo: get all packets and assume a default broadcast interval

* Add fail-safe in case node in between is running modified firmware

* Add `viaMQTT` and `hopsAway` to NodeInfo

* Replace `HOP_RELIABLE` with hopStart for repeated packet

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Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/modules/NeighborInfoModule.h

@@ -75,6 +75,9 @@ class NeighborInfoModule : public ProtobufModule<meshtastic_NeighborInfo>, priva
     /* Does our periodic broadcast */
     int32_t runOnce() override;
 
+    // Override wantPacket to say we want to see all packets when enabled, not just those for our port number
+    virtual bool wantPacket(const meshtastic_MeshPacket *p) override { return enabled; }
+
     /* These are for debugging only */
     void printNeighborInfo(const char *header, const meshtastic_NeighborInfo *np);
     void printNodeDBNodes(const char *header);