Android: FilePath-ify RunnerWorker

Change-Id: If8e8c2ba94047bbb48a2ae5fee68d4c12d952fd6
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Artem Sokolovskii <artem.sokolovskii@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/android/androidrunnerworker.h

@@ -15,6 +15,7 @@ QT_BEGIN_NAMESPACE
 class QProcess;
 QT_END_NAMESPACE
 
+namespace Utils { class FilePath; }
 namespace ProjectExplorer { class RunWorker; }
 
 namespace Android {
@@ -100,7 +101,7 @@ private:
     int m_apiLevel = -1;
     QString m_extraAppParams;
     Utils::Environment m_extraEnvVars;
-    QString m_debugServerPath;
+    Utils::FilePath m_debugServerPath; // On build device, typically as part of ndk
     bool m_useAppParamsForQmlDebugger = false;
 };