protocl-native: v0: Fix integer overflow to buffer overflow

Too many dict items could cause an integer overflow leading to a
stack-based buffer overflow.

src/modules/module-protocol-native/connection.h

@@ -10,6 +10,10 @@
 
 #include <pipewire/extensions/protocol-native.h>
 
+#define MAX_DICT	1024
+#define MAX_PARAM_INFO	128
+#define MAX_PERMISSIONS	4096
+
 #ifdef __cplusplus
 extern "C" {
 #endif