refactor: reorganize into subdirs (config/ util/ http/ notifs/ queue/ integrations/ static/)

util/json.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <stdio.h>
+#include "buf.h"
+
+/* JSON micro-parser */
+char  *json_str(const char *json, const char *key);
+char **json_array(const char *json, int *n);
+
+/* URL helpers */
+void  urldecode(char *s);
+char *qparam(const char *qs, const char *key);
+
+/* Escaping */
+void html_esc(Buf *b, const char *s);
+void js_esc(Buf *b, const char *s);
+void fwrite_json_str(FILE *f, const char *s);
+
+/* String utils */
+int str_icontains(const char *hay, const char *needle);