fix: initialize rosout publisher on distros newer than Humble

[esteve]

This PR initializes the rosout publisher for distros after Humble.

Fixes #590

[esteve]

@EmeraldWither friendly ping 🙂 Can you check if this change fixes your issue with rosout? I believe the test covers it and I've been able to reproduce it for distros newer than Humble. Thanks.

[EmeraldWither]

Hi, thanks for taking a look at this.

This change does work on Kilted, and using the following code snippet does result in the expected behavior:

use anyhow::{Error, Result};
use rclrs::*;

fn main() -> Result<(), Error> {
    let context = Context::default_from_env()?;
    let mut executor = context.create_basic_executor();
    let node = executor.create_node("log_test_node")?;
    log!(node.error(), "This is a log message!");
    executor.spin(SpinOptions::default());
    Ok(())
}

[esteve]

@EmeraldWither thanks for the feedback 🙂