Feature: Photos view layout mode

**Is your feature request related to a problem?**
Feature request.

**Describe the solution**
A photos layout mode (implemented as a new data template in the grid view browser) which shows images at their original size.

**Describe alternatives you've considered**
Use grid view - large.

**Scope**

| Capability | Priority |
| :---------- | :------- |
| This proposal will allow users to view photos in their original size | Must |
| Use adaptive layout mode feature to switch to photos view when majority or all items enumerated are images | Should |
| Show name when selected or on hover | could |
| Sort by date taken (depends on #4432) by default when this layout mode is selected and the sort mode has not been set | Could |
| Hide preview section of preview pane and just show details since the full content is already being shown | Could |
| Add a slider to reduce image sizes | Could |

**Additional comment**
Concept from Files server:

**Open questions**
*Should photo metadata (eg, date taken, location) be shown in the item or a header?*
*How and where should folders and non-image files be displayed? Should they be separated like OneDrive does?*

Start by reviewing the existing grid view—large mode and the proposed adaptive layout behavior. Resolve how folders, non-image files, names, metadata, sorting, preview details, and image sizing should work; done means a photos mode can display photos at their original size with agreed behavior for these cases.

Written by the indexing model from the issue text.