feat: slugifying approach change [CU-2q95fwv]

[CodeVoyager]

Ticket

https://app.clickup.com/t/2q95fwv

Summary

Unification of slugging logic. Opening this logic for extending (see: README.md).

• Slugger available as a controller
• Slugger available as a service

Depends on: https://github.com/VirtusLab-Open-Source/strapi-typed/pull/13

Test Plan

Things should work the same. Changes should be transparent for current development experience.

[cyp3rius]

Task linked: CU-2q95fwv Slugify endpoint