Add `Clash.Class.NumConvert` #3580

Job	Run time
Build and run limited tests (macOS-13, 9.0)	4m 9s
Build and run limited tests (macOS-13, 9.2)	4m 8s
Build and run limited tests (macOS-13, 9.6)	4m 9s
Build and run limited tests (macOS-13, 9.4)	4m 8s
Build and run limited tests (macOS-13, 9.10)	4m 9s
Build and run limited tests (windows-latest, 9.2)	4m 7s
Build and run limited tests (windows-latest, 9.0)	4m 7s
Build and run limited tests (windows-latest, 8.10)	4m 3s
Build and run limited tests (windows-latest, 9.4)	4m 2s
Build and run limited tests (macOS-13, 9.8)	1s
Build and Test	0s
All jobs finished	1s
	37m 4s

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