mobile: add option to merge local cloud cache data

The UI is ugly, and of course this is hidden in the developer options that have
to first be enabled in the advanced settings. As I mentioned in the previous
commit, I believe the actual risk that something gets damaged here is very low,
but still, explaining this so it makes sense to the casual user may be a bit...
difficult.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

mobile-widgets/qml/main.qml

@@ -534,6 +534,14 @@ if you have network connectivity and want to sync your data to cloud storage."),
 					}
 				}
 
+				Kirigami.Action {
+					text: qsTr("Access local cloud cache dirs")
+					onTriggered: {
+						globalDrawer.close()
+						showPage(recoverCache)
+					}
+				}
+
 				/* disable for now
 				Kirigami.Action {
 					text: qsTr("Dive planner")
@@ -822,6 +830,12 @@ if you have network connectivity and want to sync your data to cloud storage."),
 		id: mapPage
 		visible: false
 	}
+
+	RecoverCache {
+		id: recoverCache
+		visible: false
+	}
+
 /* this shouldn't be exposed unless someone will finish the work
 	DivePlannerSetup {
 		id: divePlannerSetupWindow