Add GET /collections endpoint

src/types/collection.ts

@@ -0,0 +1,8 @@
+export type Collection = {
+	collection: string;
+	note: string | null;
+	hidden: boolean;
+	single: boolean;
+	icon: string | null;
+	translation: Record<string, string>;
+};

src/types/express.d.ts

@@ -11,6 +11,7 @@ declare global {
 			user?: string;
 			role?: string;
 			collection?: string;
+			sanitizedQuery?: Record<string, any>;
 		}
 	}
 }