hardware wallets: pull udev rules into our repository

README.md heavily based on 060c7fc618/hwilib/udev/README.md

contrib/udev/README.md

@@ -0,0 +1,24 @@
+# udev rules
+
+This directory contains all of the udev rules for the supported devices
+as retrieved from vendor websites and repositories.
+These are necessary for the devices to be usable on Linux environments.
+
+ - `20-hw1.rules` (Ledger): https://github.com/LedgerHQ/udev-rules/blob/master/20-hw1.rules
+ - `51-coinkite.rules` (Coldcard): https://github.com/Coldcard/ckcc-protocol/blob/master/51-coinkite.rules
+ - `51-hid-digitalbitbox.rules`, `52-hid-digitalbitbox.rules` (Digital Bitbox): https://shiftcrypto.ch/start_linux
+ - `51-trezor.rules` (Trezor): https://github.com/trezor/trezor-common/blob/master/udev/51-trezor.rules
+ - `51-usb-keepkey.rules` (Keepkey): https://github.com/keepkey/udev-rules/blob/master/51-usb-keepkey.rules
+ - `51-safe-t.rules` (Archos): https://github.com/archos-safe-t/safe-t-common/blob/master/udev/51-safe-t.rules
+
+# Usage
+
+Apply these rules by copying them to `/etc/udev/rules.d/` and notifying `udevadm`.
+Your user will need to be added to the `plugdev` group, which needs to be created if it does not already exist.
+
+```
+$ sudo groupadd plugdev
+$ sudo usermod -aG plugdev $(whoami)
+$ sudo cp contrib/udev/*.rules /etc/udev/rules.d/
+$ sudo udevadm control --reload-rules && sudo udevadm trigger
+```