Android: add IR pointer modes to InputOverlayPointer

* Disabled: disables the overlay pointer
* Follow: default behaviour, IR pointer follows touch position
* Drag: IR pointer moves relative to the initial touch event position

Source/Android/app/src/main/res/menu/menu_overlay_controls_wii.xml

@@ -38,6 +38,9 @@
         android:id="@+id/menu_emulation_ir_group"
         android:title="@string/emulation_ir_group">
         <menu>
+            <item
+                android:id="@+id/menu_emulation_set_ir_mode"
+                android:title="@string/emulation_ir_mode"/>
             <item
                 android:id="@+id/menu_emulation_set_ir_sensitivity"
                 android:title="@string/emulation_ir_sensitivity"/>

Source/Android/app/src/main/res/values/arrays.xml

@@ -433,6 +433,12 @@
         <item>Right Stick</item>
     </string-array>
 
+    <string-array name="irModeEntries">
+        <item>Disabled</item>
+        <item>Follow</item>
+        <item>Drag</item>
+    </string-array>
+
     <string-array name="doubleTap">
         <item>Button A</item>
         <item>Button B</item>

Source/Android/app/src/main/res/values/strings.xml

@@ -517,6 +517,7 @@ It can efficiently compress both junk data and encrypted Wii data.
     <string name="emulation_menu_help">Press Back to access the menu.\nLong press Back to exit emulation.</string>
     <string name="emulation_touch_overlay_reset">Reset Overlay</string>
     <string name="emulation_ir_group">Touch IR Pointer</string>
+    <string name="emulation_ir_mode">IR Mode</string>
     <string name="emulation_ir_sensitivity">IR Sensitivity</string>
     <string name="emulation_choose_doubletap">Double tap button</string>
     <string name="emulation_motion_controls">Motion Controls</string>