feat(agentcompany-rust): scaffold native shell and runtime bridge

AgentCompany-Rust/crates/runtime/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "runtime"
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+version.workspace = true
+
+[dependencies]
+anyhow.workspace = true
+pi_bridge.workspace = true
+
+[dev-dependencies]
+serde_json.workspace = true