[iOS] 전반적인 리팩토링 #581

Job	Run time
prepare-matrix	30s
prepare-test-matrix	22s
xcode-test (MSCacheStorageTests)	4m 0s
xcode-test (MSDataTests)	3m 18s
xcode-test (MSLoggerTests)	3m 12s
xcode-test (MSNetworkingTests)	2m 54s
xcode-test (MSPersistentStorageTests)	43s
xcode-test (MSUserDefaultsTests)	3m 16s
xcode-test (RepositoryTests)	3m 20s
xcode-build (Home)	1m 17s
xcode-build (JourneyList)	1m 48s
xcode-build (KeychainStorage)	41s
xcode-build (MSCacheStorage)	37s
xcode-build (MSConstants)	39s
xcode-build (MSData)	38s
xcode-build (MSDomain)	34s
xcode-build (MSExtension)	47s
xcode-build (MSImageFetcher)	48s
xcode-build (MSLogger)	45s
xcode-build (MSNetworking)	51s
xcode-build (MSPersistentStorage)	1m 0s
xcode-build (MSUIKit)	1m 33s
xcode-build (MSUserDefaults)	42s
xcode-build (MusicSpot-Debug)	2m 12s
xcode-build (MusicSpot-Mock)	2m 13s
xcode-build (MusicSpot-Release)	2m 36s
xcode-build (NavigateMap)	1m 15s
xcode-build (RewindJourney)	1m 27s
xcode-build (SaveJourney)	1m 19s
xcode-build (SelectSong)	1m 7s
xcode-build (Spot)	1m 10s
	47m 34s

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