Add reset functionality

[andimik]

There is an undocumented feature in RDSSpy for resetting the RDS data via TCP-connection. It would be useful to have such a feature in redsea too, because when scrolling thru the FM band, there might be some strange effects like combined RDS codes from two different stations.

So I suggest resetting the decoder internally when it gets

RESET-------

as input.

see rdssocket.txt

When you play this file, then you get RDS fragments from previous received station.

Examples:

VAL 20EN which comes from VAL 202 and then KAERNTEN or
R.MAVI which comes from R.MARIA and then PRVI .

(both PS not completely transmitted due to timing error, which needs to be fixed in a different github project)

rdssocket_redsea.txt

[windytan]

Nice idea!

[windytan]

By the way, as a workaround, you may be able to activate the current reset mechanism by adding 2 extra repeats of the new PI code, like so:

A3FF255061757374
9202------------
9202------------
9202052F44723220
...