fix(core): Refactor and clean up class imports and exports

ts/classes.asynccontext.ts

@@ -0,0 +1,18 @@
+import * as plugins from './plugins.js';
+import { AsyncStore } from './classes.asyncstore.js';
+
+export class AsyncContext {
+  private _context = new plugins.simpleAsyncContext.AsyncContext.Variable<AsyncStore>();
+  private _store = new AsyncStore();
+  get store() {
+    return this._context.get() || this._store;
+  }
+  set store(value: AsyncStore) {
+    this._store = value;
+  }
+  public async runScoped(functionArg: () => Promise<void>) {
+    await this._context.run(new AsyncStore(this.store), async () => {
+      await functionArg()
+    });
+  } 
+}