Add wrapper for expressjs

[rolaca11]

Is your feature request related to a problem? Please describe.
I'd like to use expressjs in my Kotlin/JS app and auto generation with dukat, or karakum doesn't seem to work

Describe the solution you'd like
Add a first-party wrapper for express

Describe alternatives you've considered
Generating the externals with dukat/karakum

[rolaca11]

I gave it a shot myself, but it feels like this is way too complicated to me

[turansky]

What about Fastify?
Will it work for you (instead of expressjs)?