Improve weight checker #763

Job	Run time
Task check format	1m 18s
Task check features (runtime/darwinia)	2m 20s
Task check features (runtime/crab)	1m 32s
Task check features (runtime/pangoro)	1m 55s
Task check features (runtime/pangolin)	2m 16s
Task build darwinia	43m 9s
Task test darwinia	44m 42s
Task check EVM	4m 45s
Task check runtimes (darwinia-dev, https://rpc.darwinia-network)	55s
Task check runtimes (crab-dev, https://crab-rpc.darwinia-network)	50s
Task check runtimes (pangoro-dev, https://pangoro-rpc.darwinia.network)	53s
Task check runtimes (pangolin-dev, https://pangolin-rpc.darwinia.network)	52s
Task checks cleaning	2s
	1h 45m 29s

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