feature: add resource file on lib

Author: khadkarajesh

auth/src/main/res/values/strings.xml

@@ -11,4 +11,6 @@
     <string name="msg_login_success">Logged in successfully</string>
     <string name="loading">loading..</string>
     <string name="msg_success_password_reset_link_sent">Password reset link has been sent to your email</string>
+    <string name="facebook_app_id">your_app_id</string>
+    <string name="fb_login_protocol_scheme">your_login_protocal_scheme</string>
 </resources>