feat: new automation tests for accounts API #151

Job	Run time
API test set: accounts.test.ts / Node: lts/*	11m 44s
API test set: addresses.test.ts / Node: lts/*	12m 28s
API test set: batches.test.ts / Node: lts/*	11m 24s
API test set: blocks.test.ts / Node: lts/*	11m 49s
API test set: contracts.test.ts / Node: lts/*	11m 29s
API test set: logs.test.ts / Node: lts/*	12m 0s
API test set: stats.test.ts / Node: lts/*	11m 18s
API test set: tokens.test.ts / Node: lts/*	11m 42s
API test set: transactions.test.ts / Node: lts/*	13m 29s
	1h 47m 23s

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