Draw frozen combat in the new UI.

https://github.com/dcs-liberation/dcs_liberation/issues/2039

client/src/components/combatlayer/CombatLayer.tsx

@@ -0,0 +1,16 @@
+import { selectCombat } from "../../api/combatSlice";
+import { useAppSelector } from "../../app/hooks";
+import Combat from "../combat/Combat";
+import { LayerGroup } from "react-leaflet";
+
+export default function CombatLayer() {
+  const combats = useAppSelector(selectCombat);
+  return (
+    <LayerGroup>
+      {Object.values(combats.combat).map((combat) => {
+        return <Combat key={combat.id} combat={combat} />;
+      })}
+      (
+    </LayerGroup>
+  );
+}

client/src/components/combatlayer/index.ts

@@ -0,0 +1 @@
+export { default } from "./CombatLayer";