Firmware: Delevop the struct for all available variables of EPS2

[YanAzer]

Tasks will acess this struct to retrive data, including the OBDH2 task to retrieve the complete package of telemetry. This header file should be located under the firmware/app/structs subdirectory.

[andrempmattos]

@YanAzer and @mgm8, I added a scheme to abstract the structure R/W accesses. The implementation now is simple and straightforward, but we can improve from that by adding redundancies for the buffer (i.e., 3 copies) or CRC for blocks of data or even creating a restrictive policy to avoid errouneos/simultaneous accesses.

[andrempmattos]

I suggest the following change:

MPPT 1 --> MPPT 0 MPPT 2 --> MPPT 1 MPPT 3 --> MPPT 2

[andrempmattos]

I suggest the following inclusion:

HEATER_SET_POINT (For manual mode)