New bullet: Choose your framework - Express vs Nest vs Fastify

I'm about to PR a new architecture bullet that suggests making a thoughtful decision between the major frameworks. The main message is about WHEN to use each. A detailed comparison table will be included as well.

Help me here with ideas about what dimensions/features should we compare between the three.

These ideas will then be put in the comparison table.

Any Ideas?

cc @mikicho @rluvaton