[NEW PORT] devel/py-apispec: Pluggable API specification generator

A pluggable API specification generator. Currently supports the OpenAPI
Specification (f.k.a. the Swagger specification).

Features:

• Supports the OpenAPI Specification (versions 2 and 3)
• Framework-agnostic
• Utilities for parsing docstrings

WWW: https://github.com/marshmallow-code/apispec

PR: 242609
Submitted by: Goran Mekić <meka tilda.center>