Show blurhashes for image events

src/blurhash.h

@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: 2018 Wolt Enterprises
+// SPDX-License-Identifiert: MIT
+
+#pragma once
+
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+uint8_t *decode(const char *blurhash, int width, int height, int punch, int nChannels);
+
+bool isValidBlurhash(const char *blurhash);