PicoTerminal for the vgaboard

.uf2 file for the pico vgaboard with I2S audio for the beep.
preset to 640x480 and 115200 8N1.
the serial must be connected to the "SD Jumpers".
keyboard and mouse supported, for both together you need a hub.
in any case you need a USB-OTG adapter.
please report issues and wishes on the issue tracker.
1.1.0: save settings to flash.
1.1.3: some fixes.