* feat: added slug property to trees table and controller for slug paths

* chore: add tests for tree slugs

* fix: retrieve correct object based on path using slug

* feat: add tests to treePathsController in TreePathsControllerTest.php

* feature: reach 100% coverage for treePathsController test

* refactor: move path details to treesTable.php

* refactor: move path tests to treesTable.php + 100% coverage

* fix: phpcs

---------

Co-authored-by: Stefano Vavassori <stefano.vavassori@codestorm.it>