applet.interface.i2c_master: sort found addresses for printing.

applet.sensor.ina260: style/wording. NFC.

applet.interface.i2c_master: do write scanning before read scanning to reduce possible side-effects

applet.interface.i2c_master: move scan command from interact to I2CMasterInterface Allows to use it from other applets or the repl interface

applet.interface.i2c_master: replace "scan-read" and "scan-write" commands with "scan" "-r", "-w" and "-rw" allow to select which type of addresses to scan. "-rw" is the default. Some devices only ACK one of the addresses, so scanning both gives a better overview of the bus.

firmware: fix pipe names to match software.

applet.sensor.ina260: add applet for the INA260 I2C power monitoring IC.

software: use python_requires instead of an ad-hoc condition.

Use more consistent, and lowercase, names for repositories. I'm not sure why were they capitalized in the first place.

cli: fix misbehavior on ^C if an applet doesn't flush at the end.