feat(wechat): 实现微信聊天状态管理及消息处理功能

添加微信聊天状态管理store，包含联系人管理、消息发送/接收、未读消息计数等功能
修复聊天窗口参数传递问题，统一使用contract.id作为标识
调整消息加载数量从10条减少到5条

Cunkebao/src/pages/pc/ckbox/components/ChatWindow/components/MessageEnter/index.tsx

@@ -38,7 +38,7 @@ const MessageEnter: React.FC<MessageEnterProps> = ({
     console.log("发送消息", contract);
     const params = {
       wechatAccountId: contract.wechatAccountId,
-      wechatChatroomId: contract?.chatroomId || 0,
+      wechatChatroomId: contract?.chatroomId ? contract.id : 0,
       wechatFriendId: contract?.chatroomId ? 0 : contract.id,
       msgSubType: 0,
       msgType: 1,

Cunkebao/src/pages/pc/ckbox/components/ChatWindow/index.tsx

@@ -64,11 +64,11 @@ const ChatWindow: React.FC<ChatWindowProps> = ({
       wechatAccountId: contract.wechatAccountId,
       From: 1,
       To: 4704624000000,
-      Count: 10,
+      Count: 5,
       olderData: true,
     };
     if (contract.chatroomId) {
-      params.wechatChatroomId = contract.chatroomId;
+      params.wechatChatroomId = contract.id;
     } else {
       params.wechatFriendId = contract.id;
     }