✨[FEATURE]: Add FrSky SPort Protocol Support

[Witty-Wizard]

Description

I would like to request the addition of FrSky SPort protocol support to the serialio library. This would involve implementing the necessary decoding and encoding functionalities to handle SPort communication, similar to the existing SBUS and CRSF implementations.

The solution should include:

• [ ] Parsing SPort data frames: Extracting telemetry and sensor data from the incoming SPort frames.
• [ ] Encoding data into SPort frames: Preparing data frames for transmission to SPort-compatible devices.
• [ ] Handling error detection and correction: Implementing mechanisms as per the SPort specifications to ensure reliable communication.

Additional context:

• https://www.ordinoscope.net/static/frsky-arduino/FrskySP/doc/html/index.html
• https://code.google.com/archive/p/telemetry-convert/wikis/FrSkySPortProtocol.wiki

[Witty-Wizard]

Depreciated

S.Port has become obsolete, and replaced by F.Port, Also there is no accurate documentation for S.Port from FrSky, and it is getting difficult to implement this protocol.

With Upcoming protocols like F.Port and CRSF, We don't need to worry about implementing this protocol. For these reasons this issue is being closed.