feat: add interfaces for xtream api

shared/xtream-item.interface.ts

@@ -0,0 +1,11 @@
+export interface XtreamItem {
+    num: number;
+    name: string;
+    stream_type: 'live' | 'movie';
+    stream_id: number;
+    stream_icon: string;
+    added: string;
+    category_id: string;
+    custom_sid: string;
+    direct_source: string;
+}