Split formatting checks to a seperate workflow #392

Job	Run time
Wasm Tests (nightly)	1m 8s
Wasm Tests (beta)	1m 8s
Wasm Tests (stable)	1m 11s
Tests (stable, ubuntu-latest)	2m 47s
Tests (stable, windows-latest)	5m 25s
Tests (stable, macOS-latest)	5m 4s
Tests (beta, ubuntu-latest)	2m 53s
Tests (beta, windows-latest)	6m 8s
Tests (beta, macOS-latest)	5m 6s
Tests (nightly, ubuntu-latest)	3m 2s
Tests (nightly, windows-latest)	6m 12s
Tests (nightly, macOS-latest)	6m 16s
	46m 20s

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