feat: add HashMap store

support_comb/src/main/ets/comb_store/core/HashMapStore.ets

@@ -0,0 +1,38 @@
+import { ICombStoreCore, StoreValueType } from './StoreCoreType';
+import { HashMap } from '@kit.ArkTS';
+
+export default class HashMapStoreCore implements ICombStoreCore {
+  private readonly TAG: string = 'HashMapStoreCore'
+  private store: HashMap<string, StoreValueType>
+
+  constructor() {
+    this.store = new HashMap()
+  }
+
+  async set(key: string, value: StoreValueType): Promise<StoreValueType> {
+    this.store.set(key, value)
+    return value
+  }
+
+  get(key: string, defaultValue: StoreValueType): Promise<StoreValueType> {
+    throw new Error('Method not implemented.');
+  }
+
+  getSync(key: string, defaultValue: StoreValueType): StoreValueType {
+    return this.store.get(key) ?? defaultValue
+  }
+
+  async remove(key: string): Promise<void> {
+    this.store.remove(key)
+  }
+
+  async reset(): Promise<void> {
+    this.store.clear()
+  }
+
+  async flush(): Promise<void> {
+  }
+
+  async init(): Promise<void> {
+  }
+}