feat: update with web assembly components

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

crates/churn/wit/world.wit

@@ -0,0 +1,11 @@
+package component:churn-tasks@0.1.0;
+
+interface task {
+    id: func() -> string;
+    should-run: func() -> bool;
+    execute: func();
+}
+
+world churn {
+    export task;
+}