move get_style and format_number in utils #3077

# to view logs

Job	Run time
lint	1m 7s
build (ubuntu-latest, stable)	57s
coverage	3m 25s
build (ubuntu-latest, nightly)	1m 8s
build (windows-latest, stable)	2m 0s
build (windows-latest, nightly)	2m 10s
build (macOS-latest, stable)	1m 53s
build (macOS-latest, nightly)	1m 24s
	14m 4s

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