Refactor UART handling: update UART status management, improve dialog window dimensions, and enhance main menu display.

include/main.h

@@ -8,9 +8,12 @@
 #define TRUE 1
 #define FALSE 0
 #define BYTE uint8_t
-#define MIN_X_TERMINAL_SIZE 80
-#define MIN_Y_TERMINAL_SIZE 30
+#define MIN_X_TERMINAL_SIZE 50
+#define MIN_Y_TERMINAL_SIZE 20
+
+void handle_sigint(int sig);
 
 int main(int argc, char const **argv);
 
+
 #endif