Tests

feat: add workerStop handler, graceful exits #116

Job	Run time
Adapter Tests (Pool)	1m 34s
Adapter Tests (Workerman)	1m 27s
Adapter Tests (Swoole)	1m 27s
Adapter Tests (AMQP)	1m 19s
Adapter Tests (SwooleRedisCluster)	1m 28s
	7m 15s

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