* Add Zadig 101 to docs
* Add USBasp bootloader name
* Add links to the page
* Note the usual VIDs and PIDs for the bootloaders
* Add "List All Devices" note, just in case
* Talk about keyboard-specific bootloader procedures
* Send users to the new page in "Unknown Device for DFU Bootloader" section
* Halfkay bootloaders are also an exception here
