Fix there being a black background on the image grid (#299)

- Fix there being a black background on the card image grid
- This was being caused me loading the images as a jpeg by mistake

#279

Reviewed-on: #299
Reviewed-by: VylpesTester <tester@vylpes.com>
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

src/helpers/ImageHelper.ts

@@ -46,7 +46,7 @@ export default class ImageHelper {
                 }
             }
 
-            const image = await loadImage(await imageData.getBufferAsync("image/jpeg"));
+            const image = await loadImage(await imageData.getBufferAsync("image/png"));
 
             const x = i % gridWidth;
             const y = Math.floor(i / gridWidth);