Add tree target/command

[abhisit]

How did I test this PR?

1. Enter to due environment and choose due-onie-build-debian-10

$ due -r 

2. Build for the machine name pegatron_dm2118_b

onie/build-config $ make -j<number of jobs> MACHINEROOT=../machine/pegatron MACHINE=pegatron_dm2118_b all

3. Show the executable file format

$ file onie/build/pegatron_dm2118_b-r0/sysroot/usr/bin/tree 
onie/build/pegatron_dm2118_b-r0/sysroot/usr/bin/tree: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 4.19.143, stripped

4. It is running on Aarch64

ONIE:/ # tree --version
tree v2.1.3 (c) 1996 - 2024 by Steve Baker, Thomas Moore, Francesc Rocher, Florian Sesser, Kyosuke Tokoro
ONIE:/ # tree -L 3 /proc/fs
/proc/fs
|-- ext4
|-- jbd2
|-- lockd
|   `-- nlm_end_grace
|-- nfsd
`-- nfsfs
    |-- servers -> ../../net/nfsfs/servers
    `-- volumes -> ../../net/nfsfs/volumes

6 directories, 3 files
ONIE:/ # ls -lh /usr/bin/tree
-rwxr-xr-x    1 root     0          67.8K Nov 20  2024 /usr/bin/tree