Add fusion trajectory replay view

src/MainWindow.h

@@ -30,6 +30,7 @@ class MainWindow : public QMainWindow {
 
 public:
     explicit MainWindow(QWidget *parent = nullptr);
+    bool loadTelemetryLog(const QString &filePath);
 
 private slots:
     void toggleSerial();
@@ -41,6 +42,7 @@ private slots:
     void trimToMaxPoints();
     void updateReferenceLocation();
     void flushUiUpdates();
+    void openTelemetryLog();
 
 private:
     void buildUi();
@@ -70,6 +72,7 @@ private:
     QLineEdit *m_referenceLonEdit = nullptr;
     QPushButton *m_connectButton = nullptr;
     QPushButton *m_clearButton = nullptr;
+    QPushButton *m_openLogButton = nullptr;
     QCheckBox *m_autoFollowCheck = nullptr;
     QCheckBox *m_showTelemetryCheck = nullptr;
     QCheckBox *m_showRecentPointsCheck = nullptr;