This adds full support for the Xplorer 64, including backup and writing of new firmware to the device. Firmware must be unscrambled (not dumped directly from the chips in a chip reader) in order to work with this program. Firmware dumped via the Sanni Cart Reader with this function work perfectly when written back.
This updates the N64 Gameshark function description, adds progress bars for the writing and verification functions, and updates the Chip ID function to report an unknown chip.
This completes the N64 Gameshark functions. It adds the command to enable CPLD address ranges of 0x1EEx_xxxx, 0x1EFx_xxxx, and 0x1ECx_xxxx which are necessary to program the SST 28LF040 eeprom. This also adds full support for the SST 28LF040 eeproms.
Unable to actually test this myself because I do not have a HW3 to test on. However, looking at the schematic, if the EEP switch is set to the off position then the pin will be floating and the result of the 1K resistor test will be random.
DS1307 does not seem to have the lost lostPower function. So the time does not get set on upload and needs to be set manually as described in the [wiki](https://github.com/sanni/cartreader/wiki/Real%E2%80%90Time-Clock#setting-the-time).
In Config.h set like this:
````
#define RTC_installed
//#define DS3231
#define DS1307
````
Connect "Tiny RTC I2C module" or similar to the SDA/SCL/VCC/GND pins.
The `setVoltage()` function should be called even when `ENABLE_VSELECT` is disabled because `ENABLE_3V3FIX` also uses it. There is no resource cost to do this as when both options are disabled the compiler will optimize this function out. This just "future proofs" the code so if that function ever does more it doesn't need updated everywhere. This applies to `setup_FlashVoltage()` as well.
The changes to OSCR.cpp are just for code formatting and additional comments to clarify this.
