add queries for getting result count

code/infrastructure/eval/query/memgraph/queries/queries.txt

+count|MATCH (n) return count(n);
 anc|MATCH path=(node:Host)-[*]->(ancestor) RETURN ancestor, size(path) AS distance_upstream ORDER BY distance_upstream;
 desc|MATCH path=(node:Host)<-[*]-(descendant) RETURN descendant, size(path) AS distance_downstream ORDER BY distance_downstream;
 path|MATCH path = (a:Subject {_uuid:'0CF2BB3E-36B8-11E8-BF66-D9AA8AFF4A69'})-[ *bfs]-(b:Event) RETURN path;

code/infrastructure/eval/query/neo4j/queries/queries.txt

+count|MATCH (n) return count(n);
 anc|MATCH path=(node:Host)-[*]->(ancestor) RETURN ancestor, length(path) AS distance_upstream ORDER BY distance_upstream;
 desc|MATCH path=(node:Host)<-[*]-(descendant) RETURN descendant, length(path) AS distance_downstream ORDER BY distance_downstream;
 path|MATCH path = shortestPath((a:Subject where a._uuid='0CF2BB3E-36B8-11E8-BF66-D9AA8AFF4A69')-[*]-(b:Event)) RETURN path;

code/infrastructure/eval/query/ongdb/queries/queries.txt

+count|MATCH (n) return count(n);
 anc|MATCH path=(node:Host)-[*]->(ancestor) RETURN ancestor, length(path) AS distance_upstream ORDER BY distance_upstream;
 desc|MATCH path=(node:Host)<-[*]-(descendant) RETURN descendant, length(path) AS distance_downstream ORDER BY distance_downstream;
 path|MATCH (a:Subject)-[*]-(b:Event) WHERE a._uuid = '0CF2BB3E-36B8-11E8-BF66-D9AA8AFF4A69' WITH a, b MATCH path = shortestPath((a)-[*]-(b)) RETURN path