OmniGears: add expanded desktop settings

Add Immersive mode, based on Dirty Unicorns Expanded desktop
http://gerrit.dirtyunicorns.com/#/c/2025/

Includes fixes from @Mazda--

Change-Id: Ied76fe53f863f375b9d7431f35ba4d7a75d74566
diff --git a/res/values/custom_strings.xml b/res/values/custom_strings.xml
index 149d03d..51b96f5 100644
--- a/res/values/custom_strings.xml
+++ b/res/values/custom_strings.xml
@@ -715,4 +715,15 @@
     <string name="quick_pulldown_right">Right</string>
     <string name="quick_pulldown_always">Always</string>
 
+    <!-- Expanded desktop -->
+    <string name="expanded_desktop_title">Expanded desktop</string>
+    <string name="expanded_desktop_summary">Per-app configuration of the status bar and navigation key view</string>
+    <string name="expanded_hide_nothing">Hide nothing</string>
+    <string name="expanded_hide_status">Hide status bar</string>
+    <string name="expanded_hide_navigation">Hide navigation bar</string>
+    <string name="expanded_hide_both">Hide both</string>
+    <string name="expanded_nothing_to_show">To add a custom per-app configuration for expanded state, set "Enabled for all" to the off position</string>
+    <string name="expanded_desktop_state">Expanded state</string>
+    <string name="expanded_enabled_for_all">Enabled for all</string>
+    <string name="expanded_user_configurable">User configurable</string>
 </resources>