Big refactor of the structure of unofficial Joomla! 4 Postman Collection

This pre-release is a big refactor of the structure of the Joomla! 4 unofficial Postman Collection based on v1.0.0 (old-structure) branch.
I want to say a special thanks to @bato3 for adding value to this collection.
This refactor is based on @bato3 contribution.

What's Changed

• Batch normalization by @bato3 in #21

Full Changelog: v1.0.0...v2.0.0-alpha.1

Unofficial Postman Collection For Joomla! 4 Based On Joomla! Docs

This release is based on the old master branch.
The work made here has been contributed by some core developers