Add option to stream at device native resolution

Fixes #155

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

@@ -7,6 +7,7 @@
         <item>1080p</item>
         <item>1440p</item>
         <item>4K</item>
+        <item>Native</item>
     </string-array>
     <string-array name="resolution_values" translatable="false">
         <item>640x360</item>
@@ -15,6 +16,7 @@
         <item>1920x1080</item>
         <item>2560x1440</item>
         <item>3840x2160</item>
+        <item>Native</item>
     </string-array>
 
     <string-array name="fps_names">

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

@@ -138,6 +138,8 @@
     <string name="category_basic_settings">Basic Settings</string>
     <string name="title_resolution_list">Video resolution</string>
     <string name="summary_resolution_list">Increase to improve image clarity. Decrease for better performance on lower end devices and slower networks.</string>
+    <string name="title_native_res_dialog">Native Resolution Limitations</string>
+    <string name="text_native_res_dialog">Native resolution modes are not officially supported by GeForce Experience, so it will not set your host display resolution. You will need to set it manually while in game.\n\nIf your host PC display does not support this device\'s native resolution, you may need to add the resolution option manually in the NVIDIA Control Panel.\n\nFinally, your device or host PC may not support streaming at native resolution. If it doesn\'t work on your device, you\'re just out of luck.</string>
     <string name="title_fps_list">Video frame rate</string>
     <string name="summary_fps_list">Increase for a smoother video stream. Decrease for better performance on lower end devices.</string>
     <string name="title_seekbar_bitrate">Video bitrate</string>