Add hook interfaces which were generated by a script which parses
hooks.txt and identifies caller namespaces and directories.
Hook interfaces are mostly placed in a Hook/ subdirectory
relative to the caller location. When there are callers in multiple
directories, a "primary" caller was manually selected. The exceptions to
this are:
* The source root, maintenance and tests, which use includes/Hook. Test
hooks need to be autoloadable in a non-test request so that
implementing test interfaces in a generic handler will not fail.
* resources uses includes/resourceloader/Hook
* The following third-level subdirectories had their hooks placed in
the parent ../Hook:
* includes/filerepo/file
* includes/search/searchwidgets
* includes/specials/forms
* includes/specials/helpers
* includes/specials/pagers
Parameters marked as legacy references in hooks.txt are passed
by value in the interfaces.
Bug: T240307
Change-Id: I6efe2e7dd1f0c6a3d0f4d100a4c34e41f8428720
f5aaf75ad1