https://www.mediawiki.org/wiki/Extension:CheckUser should contain information about the new tables created to hold Client Hints data.
====Acceptance criteria====
* [x] Create two subpages for cu_useragent_clienthints and cu_useragent_clienthints_map respectively that follow a similar format to https://www.mediawiki.org/wiki/Extension:CheckUser/cu_changes_table
** https://www.mediawiki.org/wiki/Extension:CheckUser/cu_useragent_clienthints_map_table and https://www.mediawiki.org/wiki/Extension:CheckUser/cu_useragent_clienthints_table
* [x] Update https://www.mediawiki.org/wiki/Extension:CheckUser to link to these subpages and other areas that reference the tables
* [x] Update https://www.mediawiki.org/wiki/Extension:CheckUser to include information on the configuration values added for client hints.