Add software spotlight: FairMQ

• 👉 Review here
• 👉 Edit here

Closes #226 (closed)

• would you please use the logo we received at the spotligts overview page?
• It would probably be good to add CERN at the "Centres" field, because it is a common development.
• I would remove the "Particle behaviour analysis" from the "scientific community" field.
• remove the comma in the bullet list "..., and RDMA"