Many improvements.

types/global.ts

@@ -0,0 +1,15 @@
+import { Link, Tag } from "@prisma/client";
+
+export interface LinkAndTags extends Link {
+  tags: Tag[];
+}
+
+export interface NewLink {
+  name: string;
+  url: string;
+  tags: string[];
+  collectionId: {
+    id: string | number;
+    isNew?: boolean;
+  };
+}