New port: www/p5-Dancer-Plugin-Swagger

This plugin provides tools to create and access a Swagger specification file
for a Dancer REST web service.

Overview of Dancer::Plugin::Swagger's features:

• Can create a /swagger.json REST specification file.
• Can auto-discover routes and add them to the swagger file.
• Can provide a Swagger UI version of the swagger documentation.

WWW: https://metacpan.org/pod/Dancer::Plugin::Swagger

PR: 237109
Submitted by: Geoffroy Desvernay <dgeo@centrale-marseille.fr>
Approved by: miwi (mentor)
Differential Revision: https://reviews.freebsd.org/D19919