Set up the frontend toolchain and app shell

Filter the sidebar refs

Fill the sidebar with the repository's refs

Remember recently opened repositories

Pick repositories with a folder dialog and a recents list

Stream graph rows over an IPC channel

Make the skip control reachable in WebKit

Test the UI in real browsers without a native build

Lay out the commit graph in Rust

Own repositories with tokio actors

Add a Cargo workspace and the gigit-git crate

Set up the frontend toolchain and app shell