Changes to the use statements done automatically via script
Addition of missing use statement done manually
Change-Id: I813e0d8fb266474eab5ad59ba33f6cd089099212
This is not really anything new. Most code already followed these
sniffs. This patch just fixes the remaining exceptions. Also:
* Remove PHPDoc blocks that don't add anything but just repeat the
strict types.
* Remove @file comments in favor of class-level comments.
* Add strict types where possible, most notably some `void`.
Change-Id: Iff6872dff68170b0fc4e82ac2ba3cad385e8773e
