Make formats appear once in array

This doesn't cause any issues but just in case: this ensures the formats only appear once in the array instead of having multiple of the same (by using a set)

probably unnecessary but, lol

src/routes/+page.svelte

@@ -77,7 +77,7 @@
 		isMobile={data.isMobile}
 		bind:files={ourFiles}
 		onupload={runUpload}
-		acceptedFormats={converters.flatMap((c) => c.supportedFormats)}
+		acceptedFormats={[...new Set(converters.flatMap((c) => c.supportedFormats))]}
 	/>
 </div>