Playground update and provider #68

Job	Run time
check-version	6s
build (20)	3m 4s
publish-meshsdk-contract	2m 58s
publish-meshsdk-cli	40s
publish-meshsdk-common	3m 8s
publish-meshsdk-core	3m 4s
publish-meshsdk-core-csl	3m 10s
publish-meshsdk-core-cst	2m 58s
publish-meshsdk-provider	3m 1s
publish-meshsdk-react	3m 0s
publish-meshsdk-transaction	3m 12s
publish-meshsdk-wallet	2m 51s
	31m 12s

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