output: store name

src/dulcepan.h

@@ -31,6 +31,8 @@ struct dp_output {
 	uint32_t global_name;
 	struct wl_output *wl_output;
 
+	char *name;
+
 	struct wl_surface *main_surface;
 	struct zwlr_layer_surface_v1 *main_layer_surface;
 	struct wp_viewport *main_viewport;
@@ -198,6 +200,7 @@ void dp_log_error(const char *fmt, ...);
 void dp_log_fatal(const char *fmt, ...);
 
 void *dp_zalloc(size_t size);
+char *dp_strdup(const char *str);
 
 const char *dp_ext_from_path(const char *path);
 enum dp_file_format dp_ext_to_format(const char *ext);