A service needs to be created that can return associated client hints data from the database for given reference IDs over multiple tables. This service will be used to collect the data from the DBs to display in the CheckUser interfaces for privileged users.

Acceptance criteria:

• Create a service that collects and returns this data
• Create a result class to hold this data (similar to ClientHintReferenceIds)
• Test that the service works with phpunit tests as it won't be used until later patches are written
• Make patches to test that the service fulfils the need of the interfaces by getting them to display client hint data