Partial SSB and RDS support

This version of this library start working with ssb patch.
A patch is executed internally (run by internal MCU) of the device. Usually, patches are used to fixes bugs
or add improvements and new features of the firmware installed in the internal ROM of the device. Patches to the SI4735 are distributed in binary form and have to be transferred to the internal RAM of the device
by the host MCU (in this case Arduino). Since the RAM is volatile memory, the patch stored into the device gets lost when you turn off the system. Consequently, the content of the patch has to be transferred again to the device each time after turn on the system or reset the device.