mappage.qml: add a Kirigami page for the map widget

The Page object has the following functionality:
- reloadMap(): reload all map markers.
- centerOnDiveSiteUUID(): center the map on a dive site uuid.
- centerOnLocation(): the map on a latitude, longitude in decimal.
- Select a dive list entry based on a marker selected on the map via
diveList.setCurrentDiveListIndex()

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>

mobile-widgets/qml/MapPage.qml

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0
+import QtQuick 2.6
+import QtPositioning 5.3
+import org.subsurfacedivelog.mobile 1.0
+import org.kde.kirigami 2.2 as Kirigami
+
+Kirigami.Page {
+	id: mapPage
+	objectName: "MapPage"
+	title: qsTr("Map")
+	leftPadding: 0
+	topPadding: 0
+	rightPadding: 0
+	bottomPadding: 0
+
+	MapWidget {
+		id: mapWidget
+		anchors.fill: parent
+		onSelectedDivesChanged: {
+			if (list.length === 0) {
+				console.warn("main.qml: onSelectedDivesChanged(): received empty list!")
+				return
+			}
+			var id = list[0] // only single dive selection is supported
+			var idx = diveModel.getIdxForId(id)
+			if (idx === -1) {
+				console.warn("main.qml: onSelectedDivesChanged(): cannot find list index for dive id:", id)
+				return
+			}
+			diveList.setCurrentDiveListIndex(idx, true)
+		}
+	}
+
+	function reloadMap() {
+		mapWidget.mapHelper.reloadMapLocations()
+	}
+
+	function centerOnDiveSiteUUID(uuid) {
+		if (!uuid) {
+			console.warn("main.qml: centerOnDiveSiteUUI(): uuid is undefined!")
+			return
+		}
+		mapWidget.mapHelper.centerOnDiveSiteUUID(uuid)
+	}
+
+	function centerOnLocation(lat, lon) {
+		mapWidget.map.centerOnCoordinate(QtPositioning.coordinate(lat, lon))
+	}
+}