docs: Add eCHO episode 5 (Network Performance Benchmarking)
docs: Add eCHO episode 5 (Network Performance Benchmarking)

Signed-off-by: Divine Odazie <a598a625dd88e03367a7f2fc68cf517f61587e21@gmail.com>
Signed-off-by: Quentin Monnet <d6b8e48afb2534b213e391cab43016505747a234@isovalent.com>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium