✨ Added POI interface to represent points of interest.

src/app/model/POI.ts

@@ -0,0 +1,11 @@
+export interface POI {
+  id: string;
+  location: number[];
+  complete_address: string;
+  title: string;
+  files: string[];
+  description: string;
+  user_id: null;
+  is_poi: boolean;
+  date?: string;
+}