Add sneaking indicator UI widget

files/mygui/openmw_hud.layout

@@ -65,6 +65,17 @@
             </Widget>
         </Widget>
 
+        <!-- Sneak indicator box -->
+        <Widget type="Button" skin="" position="162 146 36 36" align="Left Bottom" name="SneakBox">
+            <Widget type="Widget" skin="HUD_Box" position="0 0 36 36">
+                <Property key="NeedMouse" value="false"/>
+                <Widget type="ImageBox" skin="ImageBox" position="2 2 32 32" align="Left Top" name="SneakImage">
+                    <Property key="NeedMouse" value="false"/>
+                    <Property key="ImageTexture" value="icons\k\stealth_sneak.dds"/>
+                </Widget>
+            </Widget>
+        </Widget>
+
         <!-- Spell effects box -->
         <Widget type="Widget" skin="HUD_Box_Transparent" position="199 168 20 20" align="Right Bottom" name="EffectBox">
         </Widget>