feat: add agent

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/churn/src/main.rs

@@ -2,6 +2,8 @@ mod api;
 mod cli;
 mod state;
 
+mod agent;
+
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     dotenv::dotenv().ok();