Improve weight checker (#1248) #766

Job	Run time
Task check format	29s
Task check features (runtime/darwinia)	1m 28s
Task check features (runtime/crab)	2m 2s
Task check features (runtime/pangoro)	2m 0s
Task check features (runtime/pangolin)	1m 31s
Task build darwinia	43m 43s
Task test darwinia	1h 4m 35s
Task check EVM	4m 49s
Task check runtimes (darwinia-dev, https://rpc.darwinia-network)	57s
Task check runtimes (crab-dev, https://crab-rpc.darwinia-network)	49s
Task check runtimes (pangoro-dev, https://pangoro-rpc.darwinia.network)	1m 6s
Task check runtimes (pangolin-dev, https://pangolin-rpc.darwinia.network)	55s
Task checks cleaning	2s
	2h 4m 26s

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