Move pleroma_api controllers into controllers sub-folders

diff --git a/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex b/lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex
similarity index 100%
rename from lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
rename to lib/pleroma/web/pleroma_api/controllers/pleroma_api_controller.ex

diff --git a/lib/pleroma/web/pleroma_api/subscription_notification_controller.ex b/lib/pleroma/web/pleroma_api/controllers/subscription_notification_controller.ex
similarity index 100%
rename from lib/pleroma/web/pleroma_api/subscription_notification_controller.ex
rename to lib/pleroma/web/pleroma_api/controllers/subscription_notification_controller.ex

diff --git a/test/web/pleroma_api/pleroma_api_controller_test.exs b/test/web/pleroma_api/controllers/pleroma_api_controller_test.exs
similarity index 100%
rename from test/web/pleroma_api/pleroma_api_controller_test.exs
rename to test/web/pleroma_api/controllers/pleroma_api_controller_test.exs

diff --git a/test/web/pleroma_api/subscription_notification_controller_test.exs b/test/web/pleroma_api/controllers/subscription_notification_controller_test.exs
similarity index 100%
rename from test/web/pleroma_api/subscription_notification_controller_test.exs
rename to test/web/pleroma_api/controllers/subscription_notification_controller_test.exs