misc: fuzz - folder to hold files for oss-fuzz integration

- GH #2660

misc/fuzz/fuzz_uri.c

@@ -0,0 +1,8 @@
+#include "../parser/parse_uri.c"
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    struct sip_uri uri;
+    parse_uri(data, size, &uri);
+    return 0;
+}