Adding into AndroidManifest.xml

I want to add this piece of code into the androidmanifest.xml file , using flutterflow :

 <receiver android:name="com.shounakmulay.telephony.sms.IncomingSmsReceiver"
		    android:permission="android.permission.BROADCAST_SMS" android:exported="true">
		    <intent-filter>
			<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
		    </intent-filter>
		</receiver>

This is for a custom widget which reads incoming OTP's and populates element for verification using the 'telephony' package . The required permissions have been added through custom permissions.
Anyway to add this above piece of code through flutterflow and not by changing the source code locally or in github ??