swarm/storage/feed: Renamed package

.github/CODEOWNERS

cmd/swarm/feeds.go

cmd/swarm/feeds_test.go

swarm/OWNERS

swarm/api/api.go

swarm/api/client/client.go

swarm/api/client/client_test.go

swarm/api/http/server.go

swarm/api/http/server_test.go

swarm/api/manifest.go

swarm/pss/notify/notify.go

swarm/storage/feed/binaryserializer.go

swarm/storage/feed/binaryserializer_test.go

swarm/storage/feed/cacheentry.go

swarm/storage/feed/doc.go

swarm/storage/feed/error.go

swarm/storage/feed/feed.go

swarm/storage/feed/feed_test.go

swarm/storage/feed/handler.go

swarm/storage/feed/handler_test.go