graph2: Added unknownNick query

graph2/schema/types/UnknownNick.gql

@@ -0,0 +1,20 @@
+"""
+An unknown nick is a nick found by the logbot that's not associated with
+any characters. Many are going to be false positives, but most should be
+useful in pointing out which characters are missing.
+"""
+type UnknownNick {
+  "The IRC nick that's unknown."
+  nick: String!
+
+  "The amount of logs that contains the unknown nick."
+  score: Int!
+}
+
+"""
+Input for the unknownNicks query.
+"""
+input UnknownNicksFilter {
+  "The highest amount of unknown nicks to return."
+  limit: Int!
+}