SDL: Fixed missing imports in SDLActivity (thanks @guusw!)

SDL Commits
1 
From 986818143deb266d9a76b7bc59e63aa35a357797 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 18 Jul 2022 07:20:58 -0700
Subject: [PATCH] Fixed missing imports in SDLActivity (thanks @guusw!)

---
 .../app/src/main/java/org/libsdl/app/SDLActivity.java           | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java b/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
index 3f0752f164d..d982943a153 100644
--- a/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
+++ b/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
@@ -27,7 +27,9 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
+import android.text.Editable;
 import android.text.InputType;
+import android.text.Selection;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.SparseArray;