applet: fix a few typos. NFC.

applet..jtag_pinout: adjust for jtag applet being renamed.

cli: permute Python module names in logs for better readability.

applet: invent a taxonomy and reorganize everything according to it. Also, improve some descriptions, update revision requirements, and add/remove preview flag where appropriate.

software: remove explicit asyncio dependency. The asyncio PyPI package is a compatibility shim that doesn't work on Python 3.7 in the first place.

applet.spi_flash_25c: identify: decode SFDP data, if present.

applet.spi_flash_25c: identify: significantly improve robustness. Somef flashes return 0x00 for unimplemented commands, some return 0xff instead. Any commands may be unimplemented, and some commands can return conflicting information, so show everything that looks valid at all. Also, show a warning if RES returns an invalid result, since that's most likely a device that isn't connected properly.

applet.i2c_master: add --pulls option, to enable pullups on SCL/SDA.

access.direct.demultiplexer: warn on use of pulls with revC0.

access.direct.demultiplexer: support pulls in claim_interface(). This has to be done specifically in claim_interface because it needs to be correctly sequenced with relation to IO voltage changes. This is not ideal, but works as a first approximation, and it is not clear what a significantly better solution would be.