Mapathon Query enhancement

[kshitijrajsharma]

After PR #69
For quick review :
Parameters and query generated :

  "projectIds": [11224,10042],
  "fromTimestamp": "2021-08-27T9:00:00",
  "toTimestamp": "2021-08-27T11:00:00",
  "hashtags": ["mapandchathour2021"]
}


SELECT COUNT(distinct user_id) as contributors_count
FROM osm_changeset
WHERE "created_at" between '2021-08-27T09:00:00'::timestamp AND '2021-08-27T11:00:00'::timestamp
             AND (("tags" -> 'hashtags') ~~ '%hotosm-project-11224;%' 
              OR ("tags" -> 'hashtags') ~~ '%hotosm-project-10042;%' 
              OR ("tags" -> 'hashtags') ~~ '%mapandchathour2021;%' 
              OR ("tags" -> 'comment') ~~ '%hotosm-project-11224 %' 
              OR ("tags" -> 'comment') ~~ '%hotosm-project-10042 %' 
              OR ("tags" -> 'comment') ~~ '%mapandchathour2021 %')