add splash screen

android/app/src/main/java/com/statusim/MainActivity.java

@@ -8,6 +8,7 @@ import android.content.Intent;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import com.facebook.react.ReactActivity;
+import com.cboy.rn.splashscreen.SplashScreen;
 
 import java.util.Properties;
 
@@ -23,6 +24,7 @@ public class MainActivity extends ReactActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        SplashScreen.show(this);
         super.onCreate(savedInstanceState);
 
         if (!RootUtil.isDeviceRooted()) {