Replace AspeQT with webUSB

[dcerisano]

WebUSB can talk to the USB-TTL (FTDI) cable and provide Atari Peripheral (disk, modem, etc) over the web.
Replaces AspeQT

[dcerisano]

WebSerial is better suited to directly connecting to SIO.
Converting AspeQT floppy disk to WASM is possible path.