앱 내 다국어 언어설정 기능 추가

app/src/main/AndroidManifest.xml

@@ -109,6 +109,7 @@
         <activity android:name=".main.MainActivity" />
         <activity android:name=".user.login.LoginActivity" />
         <activity android:name=".audio_content.all.AudioContentAllActivity" />
+        <activity android:name=".settings.language.LanguageSettingsActivity" />
         <activity
             android:name=".user.signup.SignUpActivity"
             android:windowSoftInputMode="stateVisible" />