ARCC v0.9.0

What's Changed

Changes since v0.8.5:

fb28bf2 Bump to 0.9.0
0398e9b feat: add ACP v1 stdio server support
a29ba6b fix: fix mock provider streaming empty output
6745b9d Polish README for Awesome list submissions: add Features section, MCP/ACP badges, set Cargo.toml repository
583829c docs: add CI/CD badges to README
6348946 Fix clippy redundant borrow in format argument

Full Changelog: v0.8.5...v0.9.0