feat: add playground and refactor code structure #769

Job	Run time
Prepare for runtime testing	1m 16s
Runtime Testing TypeScript - Kafka	1m 6s
Runtime Testing TypeScript - NATS	55s
Runtime Testing TypeScript - HTTP	43s
Runtime Testing TypeScript - MQTT	52s
Runtime Testing TypeScript - AMQP	51s
Runtime Testing TypeScript - EventSource	42s
Runtime Testing TypeScript - Regular Tests	38s
	7m 3s

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