Adding OpenWrt support for Ancatus a6 wifi 6 ax1800 ax3

For Developers
25

Found solution with a USB key

cd /tmp/mnt/usb1_1

All mtd0,1,2, ...
cat /dev/mtdx > mtdx.bin

All MTD for 2 * BOX_ANCATUS

hxxps://mega.nz/file/6PIykLLD#RCPZvgKq4fKusqiP7UipuZMZMiJmdliNNz7Aq_F1m34