TCP improvements

[ZipFile]

• Deduplicate framing parsing:
• • It was done 4 times in 4 different places. Not good.
• • New implementation tries to avoid excess memory allocations. Could be done better, but that would require major architectural changes.
• • Abstractions for the god of abstractions.
• • Since framing parser logic is separate now, it makes it possible to reuse it for e.g. OSC over SlipSerial #48/No way to take raw OSC packet and convert it to OscMessage object  #65 or any other streaming protocols.
• Remove redundant logging, since this info in one way or another is logged by Python itself (see changes in examples).
• Update TCP examples to utilize request-response feature. There already was some logic to print responses, but nothing were sent to the server that would trigger actual response.