[Notifier] Add SimpleTextin bridge

Author: gnito-org

notifier.rst

@@ -94,6 +94,7 @@ Sendberry        ``symfony/sendberry-notifier``         ``sendberry://USERNAME:P
 Sendinblue       ``symfony/sendinblue-notifier``        ``sendinblue://API_KEY@default?sender=PHONE``
 Sms77            ``symfony/sms77-notifier``             ``sms77://API_KEY@default?from=FROM``
 Sinch            ``symfony/sinch-notifier``             ``sinch://ACCOUNT_ID:AUTH_TOKEN@default?from=FROM``
+SimpleTextin     ``symfony/simple-textin-notifier``     ``simpletextin://API_KEY@default?from=FROM``
 Smsapi           ``symfony/smsapi-notifier``            ``smsapi://TOKEN@default?from=FROM&test=0``
 SmsBiuras        ``symfony/sms-biuras-notifier``        ``smsbiuras://UID:API_KEY@default?from=FROM&test_mode=0``
 Smsc             ``symfony/smsc-notifier``              ``smsc://LOGIN:PASSWORD@default?from=FROM``
@@ -119,7 +120,7 @@ Yunpian          ``symfony/yunpian-notifier``           ``yunpian://APIKEY@defau
 
 .. versionadded:: 6.3
 
-    The Bandwith, iSendPro, Plivo, RingCentral and Termii integrations were introduced
+    The Bandwith, iSendPro, Plivo, RingCentral, SimpleTextin and Termii integrations were introduced
     in Symfony 6.3.
 
 To enable a texter, add the correct DSN in your ``.env`` file and