introducing the empty loader files

this are the files that will be used to define the actions and filters for their respective area of the plugin

Signed-off-by: Tom McFarlin <tom@tommcfarlin.com>
adding a trailing whitespace to all of our defined files

this helps with cleaner diffs. It's also on one of the PSRs, and it's one of the WPCS rules. (ht @garyjones for the reminder)

Signed-off-by: Tom McFarlin <tom@tommcfarlin.com>