Custom SR5 die option for Dice So Nice

For help and suggestions:  - Kurko modules

A module for enabling custom faces to SR5 custom die (ds) and normal D6 (d6) in Dice-So-Nice.

There are some sample die sprite sheets included and more can be added by placing them in (Forge: My Assets Library/sr5-die-sheets) (Local: data/Data/sr5-die-sheets) folder.

Each image must be:
- A single column with **6 faces side by side** (face 1 at left, face 6 at right)
- Any square-faced size, e.g. 258 × 1548 px (258 px per face)
- `.webp`, `.png`, `.jpg`, or `.jpeg` format

The images will appear as selectable options in **Module Settings → Custom SR5 die option for Dice So Nice**.

The chosen sprite is registered as the **SR5 Die** system in Dice So Nice and is available for both the Shadowrun `ds` die and the standard `d6` in **Dice Presets (Faces)** menu.

**Scene reload is needed for the changes to take effect.**

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This module does not do anything if Dice So Nice module is not installed and in use.