rename some files and add nip 94 widget

src/utils/isImage.tsx

@@ -1,3 +0,0 @@
-export function isImage(url: string) {
-  return /\.(jpg|jpeg|gif|png|webp|avif)$/.test(url);
-}

src/utils/nip94.ts

@@ -0,0 +1,11 @@
+export function fileType(url: string) {
+  if (url.match(/\.(jpg|jpeg|gif|png|webp|avif)$/)) {
+    return 'image';
+  }
+
+  if (url.match(/\.(mp4|mov|webm|wmv|flv|mts|avi|ogv|mkv|mp3|m3u8)$/)) {
+    return 'video';
+  }
+
+  return 'link';
+}