Move QueryBuilder.badFieldType to FieldType class

This allows the method to be used without having a dependency on the
gerrit-lucene module, which in turn has a dependency on a specific
version of Lucene.

Change-Id: I57e92c71260a51327ed706bd65f8f9e384e15666

gerrit-solr/src/main/java/com/google/gerrit/solr/SolrChangeIndex.java

@@ -319,7 +319,7 @@ class SolrChangeIndex implements ChangeIndex, LifecycleListener {
         doc.addField(name, value);
       }
     } else {
-      throw QueryBuilder.badFieldType(type);
+      throw FieldType.badFieldType(type);
     }
   }