chore: bump version

- update demo and main.c for 3588s display
- add *.o to .gitignore to exclude build artifacts
- version 1.5.4 -> 1.5.5

lib/resource/3588s/src/main.c

@@ -287,6 +287,9 @@ static void update_ip_ui(void)
 {
     char eth[32] = {0}, wifi[32] = {0};
     get_ip("enP4p65s0", eth, sizeof(eth));
+    if (eth[0] == '\0') {
+        get_ip("eth0", eth, sizeof(eth));
+    }
     get_ip("wlan0", wifi, sizeof(wifi));
 
     if (eth[0]) {