move nodeinfo messages into new plugin system

src/plugins/NodeInfoPlugin.h

@@ -0,0 +1,29 @@
+#pragma once
+#include "ProtobufPlugin.h"
+
+/**
+ * NodeInfo plugin for sending/receiving NodeInfos into the mesh
+ */
+class NodeInfoPlugin : public ProtobufPlugin<User>
+{
+  public:
+    /** Constructor
+     * name is for debugging output
+     */
+    NodeInfoPlugin() : ProtobufPlugin("nodeinfo", PortNum_NODEINFO_APP, User_fields) {}
+
+    /**
+     * Send our NodeInfo into the mesh
+     */
+    void sendOurNodeInfo(NodeNum dest = NODENUM_BROADCAST, bool wantReplies = false);
+
+  protected:
+
+    /** Called to handle a particular incoming message
+
+    @return true if you've guaranteed you've handled this message and no other handlers should be considered for it
+    */
+    virtual bool handleReceivedProtobuf(const MeshPacket &mp, const User &p);
+};
+
+extern NodeInfoPlugin nodeInfoPlugin;