Attribute Macro info_command_handler

#[info_command_handler]

A procedural macro which registers this function as the custom INFO command handler. There might be more than one handler, each adding new information to the context.

Example:

#[info_command_handler]
fn info_command_handler(
    ctx: &InfoContext,
    for_crash_report: bool) -> RedisResult
{
    ctx.builder()
        .add_section("test_info")
        .field("test_field1", "test_value1")?
        .field("test_field2", "test_value2")?
        .build_section()?
        .build_info()?;

    Ok(())
}