Support Inband Flow Analyzer (IFA)

Brief description

I would like to contribute Support Inband Flow Analyzer (IFA) to scapy.
Partly of the IFA layer has been implemented.
I hope everyone who are interested in this can join us to enhance it.

Inband Flow Analyzer (IFA)

References:
https://datatracker.ietf.org/doc/html/draft-kumar-ippm-ifa-07

Example Packet Format:
IFAoIPv4UDP = Ether/IP/IFA/UDP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/Payload
IFAoIPv4TCP = Ether/IP/IFA/TCP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/Payload
IFAoIPv4VxLAN = Ether/IP/IFA/UDP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/VXLAN/Ether/IP/TCP/Payload
IFAoIPv4GRE = Ether/IP/IFA/GRE/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/Ether/IP/TCP/Payload
IFAoIPv6UDP = Ether/IPv6/IFA/UDP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/Payload
IFAoIPv6TCP = Ether/IPv6/IFA/TCP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/Payload
IFAoIPv6VxLAN = Ether/IPv6/IFA/UDP/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/VXLAN/Ether/IP/TCP/Payload
IFAoIPv6GRE = Ether/IPv6/IFA/GRE/IFAMetaHdr/IFAMetaHop/.../IFAMetaHop/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 locating the partly implemented IFA layer in Scapy and read the referenced IFA draft to establish the required packet structure. Compare the implementation with the listed IPv4 and IPv6 UDP, TCP, VXLAN, and GRE formats; done means those advertised encapsulations are supported consistently.