Events: Add the query-total to the search results

[StevenDufresne]

On the search results, next to the search box, add the query-total component once we hook up WP_query.

We currently don't have that control setup.

It is configured to use WP_Query to figure out what the total is but since are not yet using WP_QUERY, it doesn't work:

https://github.com/WordPress/wporg-mu-plugins/blob/17510b989037c9ee7323757346f66289ea7dcb0f/mu-plugins/blocks/query-total/index.php#L31

Design	Header

cc @iandunn

[StevenDufresne]

Implemented in https://github.com/WordPress/wordcamp.org/pull/1166