Button prompt atlas (pc/third_party/kenney-prompts/prompts.png and pc/shim/prompt_atlas_data.c)

Derived from "Input Prompts Pixel 16x" version 1.0 (23-09-2021)
Created/distributed by Kenney (www.kenney.nl)
Source used: https://opengameart.org/sites/default/files/input-prompts-pixel-16.zip
(Kenney's page: https://kenney.nl/assets/input-prompts-pixel)

License: Creative Commons Zero, CC0 1.0 Universal
https://creativecommons.org/publicdomain/zero/1.0/

CC0 needs no credit; we give it anyway: Kenney (www.kenney.nl).

What was changed: 23 of the pack's 16x16 tiles were cropped by one pixel per side and packed
into one atlas (pc/gen_prompt_atlas.py reproduces it from the pack). The four PlayStation face
buttons (cross, circle, square, triangle) are not in this version of the pack: the script draws
them (simple geometric shapes) on Kenney's blank round button. The PlayStation L1/R1/options/select are Kenney tiles in his neutral style, not Sony art. The
Switch A/B/X/Y, L/R, +/- icons come from Kenney's newer "Input Prompts" 1.5A (11-07-2026,
https://kenney.nl/assets/input-prompts, CC0 1.0; its license text is in switch/LICENSE.txt), set
"Nintendo Switch / Default": the eight PNGs in switch/ are unchanged copies, shrunk to 14x14 by the
script (neutral lettered keys, not Nintendo logos or artwork). The Xbox "View" icon (two overlapping squares) is drawn the same way, on Kenney's blank pill.

This is not data from the game's disc.
