Libusb

-------------------------
- Setup (dependencies) update.

-------------------------
- Drop support for Python 3.8
- Setup (dependencies) update.

-------------------------
- Add support for Python 3.13
- Setup (dependencies) update.
- Improvements and cleanup for win32.
- Source code refactoring and cleanup.

* New libusb_init_context API to replace libusb_init
* New libusb_get_max_alt_packet_size API
* New libusb_get_platform_descriptor API (BOS)
* Allow setting log callback with libusb_set_option/libusb_init_context
* New WebAssembly + WebUSB backend using Emscripten
* Fix regression in libusb_set_interface_alt_setting
* Fix sync transfer completion race and use-after-free
* Fix hotplug exit ordering
* Linux: NO_DEVICE_DISCOVERY option set per context
* macOS: Fix missing device list cleanup locking
* macOS: Do not clear device data toggle for newer OS versions
* macOS: Fix running binaries on older OS than build host
* Windows: Allow claiming multiple associated interfaces
* Windows: Ignore non-configured devices instead of waiting
* Windows: Improved root hub detection

* Fix regression with transfer free's after closing device
* Fix regression with destroyed context if API is misused
* Workaround for applications using missing default context
* Fix hotplog enumeration regression
* Fix Windows isochronous transfer regression since 1.0.24
* Fix macOS exit crash in some multi-context cases
* Build fixes for various platforms and configurations
* Fix Windows HID multi-interface product string retrieval
* Update isochronous OUT packet actual lengths on Windows
* Add interface bound checking for broken devices
* Add umockdev tests on Linux

----------------------
- Setup update (now based on tox >= 4.0).
- Cleanup.