add project fi provider as per announcement

https://support.google.com/fi/answer/6356597
https://productforums.google.com/forum/#!topic/project-fi/_1wI6z2GXQk

lib/carriers.js

@@ -392,6 +392,9 @@ module.exports = {
   wyndtell: [
     '%s@wyndtell.com',
   ],
+  projectfi: [
+    '%s@msg.fi.google.com',
+  ],
   /*personalcommunication: [
     //'sms@pcom.ru (put the number in the subject line)',
   ],*/

lib/providers.js

@@ -15,7 +15,8 @@ module.exports = {
     '%s@txt.att.net',
     '%s@txt.windmobile.ca',
     '%s@vtext.com',
-    '%s@text.republicwireless.com'
+    '%s@text.republicwireless.com',
+    '%s@msg.fi.google.com'
 
     //'%s@message.ting.com', // Duplicate of Sprint
     //'%s@sms.edgewireless.com',  // slow