Add ReplyWithCRAction to workflows protobuf

This CL adds the definition for the "reply with CR" action to the
workflows protobuf definitions file. This action will be the first to be
supported.

Bug: twpowertools:74
Change-Id: I93507eb7f05225cdb2320e6a1dce2563a5925083
diff --git a/src/workflows/proto/main.proto b/src/workflows/proto/main.proto
index 0230ca6..3431a63 100644
--- a/src/workflows/proto/main.proto
+++ b/src/workflows/proto/main.proto
@@ -27,6 +27,12 @@
 
   message UnmarkDuplicateAction {}
 
+  message ReplyWithCRAction {
+    int64 canned_response_id = 1;
+    bool subscribe = 2;
+    bool mark_as_answer = 3;
+  }
+
   message StarAction {
     bool star = 1; // true stars, and false unstars.
   }
@@ -77,6 +83,7 @@
     MarkDuplicateAction mark_duplicate_action = 3;
     UnmarkDuplicateAction unmark_duplicate_action = 4;
     AttributeAction attribute_action = 5;
+    ReplyWithCRAction reply_with_cr_action = 6;
     StarAction star_action = 16;
     SubscribeAction subscribe_action = 17;
     VoteAction vote_action = 18;