Fixing action route methods when a prefix exists.

[jwoertink]

Purpose

Fixes #1281

Description

This PR fixes calling action route methods like SomeAction.route or SomeAction.path to include the prefix when a prefix exists. We were already doing route matching, but missing the route helpers.

Checklist

• - An issue already exists detailing the issue/or feature request that this PR fixes
• - All specs are formatted with crystal tool format spec src
• - Inline documentation has been added and/or updated
• - Lucky builds on docker with ./script/setup
• - All builds and specs pass on docker with ./script/test