Accepting Kuery as new query language

[jesusgn90]

Hello team, this PR fixes #654

Brief summary:

• All visualizations have been refactored. They are now using filters instead queries.
• The kbn-vis has been refactored. It's now switching between Lucene and Kuery depending on the user input.
• Discover directive doesn't need changes because it's already adapted by the Elastic team.

Note: this feature is experimental for Kibana, even more for the Wazuh App. It needs lot of testing.

Regards,
Jesús

[havidarou]

LGTM! Great work!