Add incognito option to avoid manglign history & logs during tests

client/src/ui.h

@@ -41,6 +41,7 @@ typedef struct {
     qtWindow_t plot;
     qtWindow_t overlay;
     bool overlay_sliders;
+    bool incognito;
 //    char *defaultPaths[spItemCount]; // Array should allow loop searching for files
     clientdebugLevel_t client_debug_level;
 //    uint8_t device_debug_level;