This provides a rebuild of all macOS executables. For reproducibility,this was done entirely by `build_mac.sh`. I verified that differentmachines produce bit-for-bit identical output. A build machine runningXcode 16.2 16C5032a on macOS 15.2 24C101 was used.These tools should run on macOS 10.13 and later. This version wasselected as it's the minimum macOS version that the xPack tools declaresupport for.A build of libusb is included, so that the provided `dfu-util` no longerhas an external dependency.The universal structure was chosen for these tools to avoid changingpaths, anywhere they may be relied on. If desired, `build_mac.sh` canalso be used to produce single-architecture tools, even cross-compiling,depending on the value of the `ARCH` variable.The current released versions were selected: - libusb 1.0.27 - dfu-util 0.11 (including dfu-prefix and dfu-suffix) - hid-flash from STM32_HID_Bootloader 2.2.2 (this program erroneously   reports its version as 2.2.1), with a patch fromSerasidis/STM32_HID_Bootloader#68 (comment). - upload_reset from this repository at the HEAD of mainLink:stm32duino/BoardManagerFiles#72Signed-off-by: Mark Mentovai <mark@mentovai.com>

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>