chore: bump version to 0.3.1 and add release notes config

- Bump workspace package version to 0.3.1 in Cargo.toml and Cargo.lock
- Add .github/release.yml to configure GitHub generated release notes categories and labels

Merge pull request #7 from ja7ad/feat/updater

Implement warmup gating, updater crate, and CI enhancements

chore: bump version to v0.2.3

docs: add contributing guidelines and update README

chore: bump version to 0.2.1 and fix Linux CI build dependencies

chore: update Cargo.lock with new workspace crates and dependencies

- Update Cargo.lock to reflect hya-gui and hya-host workspace crates and dependency graph

chore: add readme field in hya-core and hya-net Cargo manifests

chore: retain crates/hydra-* directory names while keeping hya crate …

…names