Stop-and-wait-ARQ

Kown Limitation:

Stop-And-wait-ARQ is intended to be used in connection-oriented communication. However, we use it in a connectionless context that can result in unsynchronized sequence numbers (when one of the two peers has been restarted), resulting in the loss of the very first DATA message. This can be handled by the application by sending a no-op DATA message on channel creation.

Closes #155 (closed)

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https://sonarcloud.io/dashboard?branch=netty-codec-arq&id=org.drasyl%3Adrasyl-parent