Function render_graph

pub fn render_graph(
    effects: &Effects,
    repo: &Repo,
    dag: &Dag,
    graph: &SmartlogGraph<'_>,
    head_oid: Option<NonZeroOid>,
    commit_descriptors: &mut [&mut dyn NodeDescriptor],
) -> Result<Vec<StyledString>>

Render the smartlog graph and write it to the provided stream.