feat(formatter): More precise `Formatter::filesize()`/`Formatter::dis… #471

Job	Run time
Settings / Detect Packages	5s
Sync package: core	7s
Sync package: documentator	7s
Sync package: eloquent	7s
Sync package: formatter	9s
Sync package: graphql-printer	6s
Sync package: graphql	7s
Sync package: migrator	6s
Sync package: queue	6s
Sync package: serializer	8s
Sync package: spa	6s
Sync package: testing	6s
	1m 20s

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