Add two hooks to allow for extensions to expose log_search values in the UI

* SpecialLogAddLogSearchRelations
   Allows for adding the extra conditions needed by the query

* LogEventsListGetExtraInputs
   Allows for adding extra input fields to interface

Bug: 70850
Change-Id: If8bdbadd882d67cae82c862c7c38000e9329b04f
Merge "Add two hooks to allow for extensions to expose log_search values in the UI"