feat: add message center

packages/data-center/src/provider/base.ts

@@ -1,4 +1,5 @@
 import { Workspace as BlocksuiteWorkspace, uuidv4 } from '@blocksuite/store';
+import { MessageCenter } from 'src/message';
 import { Logger, User, WorkspaceInfo, WorkspaceMeta } from '../types';
 import type { WorkspaceMetaCollectionScope } from '../workspace-meta-collection';
 
@@ -9,16 +10,23 @@ const defaultLogger = () => {
 export interface ProviderConstructorParams {
   logger?: Logger;
   workspaces: WorkspaceMetaCollectionScope;
+  messageCenter: MessageCenter;
 }
 
 export class BaseProvider {
   public readonly id: string = 'base';
   protected _workspaces!: WorkspaceMetaCollectionScope;
   protected _logger!: Logger;
+  protected _messageCenter!: MessageCenter;
 
-  public constructor({ logger, workspaces }: ProviderConstructorParams) {
+  public constructor({
+    logger,
+    workspaces,
+    messageCenter,
+  }: ProviderConstructorParams) {
     this._logger = (logger || defaultLogger) as Logger;
     this._workspaces = workspaces;
+    this._messageCenter = messageCenter;
   }
 
   /**