chore: update type definition of daemon_measurement_t

common/include/protocol.h

 #pragma once
+#include <stdint.h>
 #include <linux/limits.h>
-#include <sys/types.h>
 
 #define MAX_DAEMON_PACKET_SIZE PIPE_BUF
-#define DAEMON_PACKET_HEADER_SIZE sizeof(u_int8_t) + sizeof(u_int16_t)
+#define DAEMON_PACKET_HEADER_SIZE sizeof(uint8_t) + sizeof(uint16_t)
 #define MAX_DAEMON_PACKET_DATA_SIZE MAX_DAEMON_PACKET_SIZE - DAEMON_PACKET_HEADER_SIZE
 
 #define DAEMON_PIPE_NAME "/var/run/sibyl"
 
 typedef struct {
     // measurement id
-    u_int8_t measurement_id;
+    uint8_t measurement_id;
     // size must not exceed 4072
-    u_int16_t size;
+    uint16_t size;
     // data
-    u_int8_t data[MAX_DAEMON_PACKET_DATA_SIZE];
+    uint8_t data[MAX_DAEMON_PACKET_DATA_SIZE];
 } daemon_measurement_t;