Get the RTC working

[Mikefly123]

Setting Up the Real Time Clock (RTC) Functionality

On the latest edition of the PROVES Kit boards we have added the RV-3028-C7 Real Time Clock (RTC) which is the same one used by the OreSat C3.

We want to be able to do the following sub-tasks with the Real Time Clock:

• [ ] We need to be able to set the time
• [ ] We need to be able to read the time
• [ ] We need to be able to set alarms that will toggle a GPIO pin
• [ ] We need to be able to activate trickle charge

[Mikefly123]

Rachel has gotten started on an RTC library in the attached repo! @Lex-ari can we check this out and see if it does a thing?

https://github.com/rrakushkin/F-Prime-RV-30-28-C7