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

The issue names no file, test, or entry point. Start by reviewing the proposed architecture bullet and the Express, Nest, and Fastify comparison scope; done means agreeing on comparison dimensions and incorporating them into the new bullet and table.

Written by the indexing model from the issue text.