Fix Client Crash because Tile is using an .rsi path (#6147)

pool fix

Resources/Prototypes/_DEN/Tiles/floor.yml

@@ -1,7 +1,7 @@
 - type: tile
   id: FloorTilePool
   name: pool tile
-  sprite: /Textures/_DEN/Tiles/pool.rsi/pool.png
+  sprite: /Textures/_DEN/Tiles/pool/pool.png
   variants: 4
   placementVariants:
   - 1.0
@@ -19,7 +19,7 @@
 - type: tile
   id: FloorTilePoolDark
   name: dark pool tile
-  sprite: /Textures/_DEN/Tiles/pool.rsi/pool-dark.png
+  sprite: /Textures/_DEN/Tiles/pool/pool-dark.png
   variants: 4
   placementVariants:
   - 1.0

Resources/Textures/_DEN/Tiles/pool.rsi/meta.json

@@ -1,17 +0,0 @@
-{
-  "version": 1,
-  "license": "CC0-1.0",
-  "copyright": "Sprites by portfiend (GitHub)",
-  "size": {
-    "x": 32,
-    "y": 32
-  },
-  "states": [
-    {
-      "name": "pool"
-    },
-    {
-      "name": "pool-dark"
-    }
-  ]
-}

Resources/Textures/_DEN/Tiles/pool/attributions.yml

@@ -0,0 +1,4 @@
+- files: ["pool.png", "pool-dark.png"]
+  license: "CC0-1.0"
+  copyright: "Sprites by portfiend (GitHub)"
+  source: "https://github.com/TheDenSS14/TheDen/"