gha 0.1.8

Utilities for developing custom GitHub Actions.
Documentation 
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//! [Grouping log lines](https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-commands#grouping-log-lines)

/// Mark the start of the log line group.
pub fn start_group(title: &str) {
    println!("::group::{title}");
}

/// Mark the end of the log line group.
pub fn end_group() {
    println!("::endgroup::");
}

/// Perform arbitrary logic in the context of a log line group.
pub fn group<T, F: FnOnce() -> T>(title: &str, f: F) -> T {
    start_group(title);
    let retval = f();
    end_group();
    retval
}