feat: add abstraction around task

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

crates/churn/src/agent/handlers/scheduled_tasks.rs

@@ -1,6 +1,9 @@
 use std::collections::BTreeMap;
 
-use crate::agent::actions::Plan;
+use crate::agent::{
+    actions::Plan,
+    task::{ConcreteTask, IntoTask},
+};
 
 #[derive(Clone)]
 pub struct ScheduledTasks {}
@@ -17,7 +20,12 @@ impl ScheduledTasks {
         tracing::info!("scheduling: {}", task);
 
         let plan = Plan::new();
-        let tasks = plan.tasks().await?;
+        let tasks: Vec<ConcreteTask> = plan
+            .tasks()
+            .await?
+            .into_iter()
+            .map(|i| i.into_task())
+            .collect();
 
         for task in tasks {
             if !task.should_run().await? {