Reuse some of the DSM2 routines to avoid code duplication.
This first version only implements the protocol on the Taranis. (and not
Telemetry code is currently untested and will not work (Polarity mismatch). The main protocols to use telemetry are FrSky protocols and not a high priority on the Taranis.
Patch v3: Fix myeeprom.h, include option value in menu.
Patch v4: Fix identing, name substructs of modeldata
the code is a bit more complicated since unions can have structs or simple types. Also change Telemetry sensor to be a struct, since a class with all public is identical to a struct in C++
Andre Bernet