Allow grouping i18n locale folders under blanket i18n folder excluded from URL

[Blargian]

Currently it's not possible to group locale folders under a single directory like i18n without having the translation URLs display with i18n/{locale}. It would be nice if there was an option to group language folders under a single i18n folder and have Mintlify automatically strip i18n from the page URLs of localized docs. /docs/i18n/es/random-page just looks sad.

Motivation

The fact that URLs map 1:1 with what is on disk is imo a super useful and convenient feature of Mintlify - misaligned disk and page structure in a large docs repo is an absolute pain. This feature unfortunately comes at the cost of a clean GitHub repo structure. Mintlify's own docs repo is a great example of this. The fact that everything is just sprawled across the root directory without any logical grouping is enough to make any self-respecting software engineer and their agent cry themself to sleep at night. 😭