Add method to call the rescan RPC

src/rpc.cpp

@@ -141,6 +141,11 @@ void RPC::getTAddresses(const std::function<void(QJsonValue)>& cb) {
     conn->doRPCWithDefaultErrorHandling(makePayload(method, ""), cb);
 }
 
+void RPC::rescan(const std::function<void(QJsonValue)>& cb) {
+    QString method = "rescan";
+    conn->doRPCWithDefaultErrorHandling(makePayload(method), cb);
+}
+
 void RPC::getZAddresses(const std::function<void(QJsonValue)>& cb) {
     QString method = "z_listaddresses";
     conn->doRPCWithDefaultErrorHandling(makePayload(method), cb);

src/rpc.h

@@ -138,6 +138,7 @@ private:
     void getPeerInfo            (const std::function<void(QJsonValue)>& cb);
     void getZAddresses          (const std::function<void(QJsonValue)>& cb);
     void getTAddresses          (const std::function<void(QJsonValue)>& cb);
+    void rescan                 (const std::function<void(QJsonValue)>& cb);
 
     Connection*                 conn                        = nullptr;
     std::shared_ptr<QProcess>   ehushd                      = nullptr;