Rodn index updates

• Allow to create index with settings described in a Json file
• Refactor research in elasticsearch :
  • conditions can be used in the four parts of boolean query (must, filter, should, must_not) (https://www.elastic.co/guide/en/elasticsearch/reference/7.17/query-dsl-bool-query.html)
  • conditions can be used as 'match', 'term', 'terms', 'range', 'query', 'simple_query' comparison
  • conditions can be boolean queries themselves (sub-query)