Added APIs to control device sleep

These APIs can be used to prevent device into sleep when sending supper big files.

PiperOrigin-RevId: 556809236

internal/platform/implementation/device_info.h

@@ -59,6 +59,10 @@ class DeviceInfo {
       std::function<void(ScreenStatus)> callback) = 0;
   virtual void UnregisterScreenLockedListener(
       absl::string_view listener_name) = 0;
+
+  // Control device sleep
+  virtual bool PreventSleep() = 0;
+  virtual bool AllowSleep() = 0;
 };
 
 }  // namespace api