feat(slave_node): Switch to RTT console output

- Reconfigure the project to use SEGGER RTT for console output instead of UART.
- Update the main loop with a new printk message for testing purposes.

software/apps/slave_node/prj.conf

@@ -2,8 +2,9 @@
 CONFIG_CONSOLE=y
 CONFIG_PRINTK=y
 
-# Enable UART console
-CONFIG_UART_CONSOLE=y
+# Disable UART console
+CONFIG_UART_CONSOLE=n
 
-# Disable RTT console to avoid conflicts
-CONFIG_RTT_CONSOLE=n
+# Enable RTT console
+CONFIG_RTT_CONSOLE=y
+CONFIG_USE_SEGGER_RTT=y

software/apps/slave_node/src/main.c

@@ -9,7 +9,7 @@
 int main(void)
 {
 	while (1) {
-		printk("Hello from Slave Node!\n");
+		printk("Hello from the updated Slave Node! Version 2.0\n");
 		k_msleep(1000);
 	}
 	return 0;