Add serial communication block

### What Happened

I would like to communicate with an Arduino board, or anything else using serial port.

### How to Reproduce

1. Open serial category
2. Use block
3. Enjoy

### Block Coding Plugin Version

0.10.1

### Godot Engine Version

4.6.2

### Operating System

_No response_

### Logs or command-line output

```shell

```

### Anything else?

Thanks for your project!