Add the rest of FX2 pinout and LED control code.

Set production pinout for FPGA configuration.

Automatically load FX2 firmware if it isn't loaded yet.

Add a CLI action for downloading test bitstream.

Add Glasgow platform, programmer and target.

Correctly use TSTriple in I2C gateware.

Move GlasgowDevice to glasgow.device and add __all__ everywhere. So that `import glasgow.gateware` doesn't pull in libusb.

Use a pads object for I2C instead of separate scl/sda signals. So that I2CSlave(platform.request("i2c")) works.

Assign an I2C address to the FPGA.

gateware/ → software/glasgow/gateware/ We need to move this so that CLI can generate Verilog directly.