feat: 새 부대편성 페이지 (#223)

Reviewed-on: https://storage.hided.net/gitea/devsam/core/pulls/223

hwe/ts/util/convertIterableToMap.ts

@@ -0,0 +1,10 @@
+export function convertIterableToMap<T extends object, K extends keyof T, V extends T[K] & (string | number | symbol)>(
+  values: Iterable<T>,
+  key: K
+): Map<V, T> {
+  const result = new Map<V, T>();
+  for (const obj of values) {
+    result.set(obj[key] as V, obj);
+  }
+  return result;
+}