Code refactoring

server/src/interfaces/IPayload.d.ts

@@ -0,0 +1,11 @@
+/**
+ * Represent a download payload sent by the frontend
+ */
+
+export interface IPayload {
+    url: string
+    params: Array<string> | string,
+    title?: string,
+    thumbnail?: string,
+    size?: string,
+}