docs(README): Add license scan report and status

[ Quentin: Remove suggested picture from end of README.md,
    Fixed commit title, Signed-off-by tag format ]

Signed-off-by: fossabot <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>

Author: fossabot

README.md

@@ -1,4 +1,6 @@
 # Hedgehog Dataplane
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fgithedgehog%2Fdataplane.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fgithedgehog%2Fdataplane?ref=badge_shield)
+
 
 This repository contains the Dataplane for [Hedgehog's Open Network
 Fabric][fabric-docs]. This component acts as a gateway between different VPCs