Data: Add one example overlay

data/resources/overlays/OVERLAY_CREDITS_AND_LICENSE.md

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+# Psx.jpg Credits
+
+To the Author: SOQUEROEU.
+
+The "psx.jpg" background was edited from the one obtained from "Soqueroeu TV Backgrounds 2.0" repository: https://github.com/soqueroeu/Soqueroeu-TV-Backgrounds_V2.0/tree/main.
+
+The material is free to use according to the agreement below:
+
+## AGREEMENT
+
+This pack is free. You should not pay for anything related to this graphics pack and shader preset. You may distribute and reproduce part from this content, as long as you give credit to the authors involved. You may not profit from the sale of products that contain material in this package without the author's prior permission.

data/resources/overlays/psx.yml

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+image: "psx.webp"
+displayStartX: 990
+displayStartY: 260
+displayEndX: 2850
+displayEndY: 1655
+alphaBlend: false