Support In-situ Operation Administration and Maintenance (IOAM)

Brief description

I would like to contribute CMCC IOAM protocol to scapy.
Partly of the IOAM layer has been implemented.
I hope everyone who are interested in this can join us to enhance it.

In-situ Operation Administration and Maintenance (IOAM)

Notice:
This is China Mobile Communications Corporation (CMCC) IOAM, instead of Cisco IOAM

0                   1                   2                  3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+--------------------------------------+-+-+-+-+--------------+
|                Flow ID               |L|D|C|R| Next Header  |
+--------------------------------------+-+-+-+-+--------------+

L: Loss Flag, alias color value of packet
D: Delay Flag, set enable to measure packet delay
C: Color Flag, set enable to measure packet drop

IOAM Shim Reference:
https://datatracker.ietf.org/doc/rfc9486/
https://datatracker.ietf.org/doc/html/rfc8321

IOAM Report Packet Reference:
https://datatracker.ietf.org/doc/draft-ietf-netconf-udp-notif/12/

IOAM layer identifier:
IPv4.proto == 186
IPv6.NextHeader == 0x0 && IPv6.HBH.option_type == 0x11

Example Packet Format:
IOAMoIPv4 = Ether/IP/IOAM/Payload
IOAMoIPv4UDP = Ether/IP/IOAM/UDP/Payload
IOAMoIPv4TCP = Ether/IP/IOAM/TCP/Payload
IOAMoIPv4VxLAN = Ether/IP/IOAM/UDP/VXLAN/Ether/IP/TCP/Payload
IOAMoIPv6IP = Ether/IPv6/IPv6ExtHdrHopByHop(nh=59, options=[HBHOptIOAM(ioam=ioam)])/Payload
IOAMoIPv6UDP = Ether/IPv6/IPv6ExtHdrHopByHop(nh=socket.IPPROTO_UDP, options=[HBHOptIOAM(ioam=IOAM)])/UDP/Payload
IOAMoIPv6TCP = Ether/IPv6/IPv6ExtHdrHopByHop(nh=socket.IPPROTO_TCP, options=[HBHOptIOAM(ioam=IOAM)])/TCP/Payload
IOAMoIPv6VxLAN = Ether/IPv6/IPv6ExtHdrHopByHop(nh=socket.IPPROTO_UDP, options=[HBHOptIOAM(ioam=IOAM)])/UDP/VXLAN/Ether/IP/TCP/Payload

Scapy version

2.5.0

Python version

3.7

Operating system

Linux 5.10.27-051027-generic

Additional environment information

No response

How to reproduce

Ignore

Actual result

No response

Expected result

No response

Related resources

No response

Start by reviewing Scapy's existing protocol-layer support and the RFC 9486, RFC 8321, and IOAM report-packet references. Define the CMCC IOAM fields, IPv4 and IPv6 identifiers, and packet compositions listed in the issue; done means those IOAMoIPv4, IOAMoIPv6, UDP, TCP, and VXLAN formats are supported.