Add libusb to tools

Author: tsterbak

README.md

@@ -120,6 +120,7 @@ Other phone vendors stops allowing to unlock the bootloader all together. There
 
 - The [Android SDK Platform Tools](https://developer.android.com/studio/releases/platform-tools) (such as adb and fastboot) are [Apache](https://android.googlesource.com/platform/system/adb/+/refs/heads/master/NOTICE)-licensed universal Android utilities
 - [Heimdall](https://gitlab.com/BenjaminDobell/Heimdall/) is an [MIT](https://gitlab.com/BenjaminDobell/Heimdall/-/blob/master/LICENSE)-licensed replacement for the leaked ODIN tool to flash Samsung devices.
+- [libusb-1.0](https://github.com/libusb/libusb) is a [LGPL-2.1](https://github.com/libusb/libusb/blob/master/COPYING)-licensed library for USB device access from Linux, macOS, Windows and others.
 
 
 ## Acknowledgements