Feature: #76085 - Add fluid debug information to admin panel

See Issue #76085

Description

A new setting in the admin panel (Preview > Show fluid debug output) enables showing fluid debug output. If the checkbox is enabled, the path to the template file of a partial and the name of a section will be shown in the frontend directly above the markup. With this feature an integrator can easily find the correct template and section.

Impact

Activating this option can break the output in frontend or may result in unexpected behavior.