增加admin管理帐号和项目的界面--初步实现

frontend/node_modules/element-plus/lib/components/message/src/instance.d.ts

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+import type { ComponentInternalInstance, VNode } from 'vue';
+import type { Mutable } from 'element-plus/es/utils';
+import type { MessageHandler, MessagePlacement, MessageProps } from './message';
+export type MessageContext = {
+    id: string;
+    vnode: VNode;
+    handler: MessageHandler;
+    vm: ComponentInternalInstance;
+    props: Mutable<MessageProps>;
+};
+export declare const placementInstances: import("vue").ShallowReactive<Record<"top" | "bottom" | "top-left" | "top-right" | "bottom-left" | "bottom-right", MessageContext[]>>;
+export declare const getOrCreatePlacementInstances: (placement: MessagePlacement) => MessageContext[];
+export declare const getInstance: (id: string, placement: MessagePlacement) => {
+    current: MessageContext;
+    prev: MessageContext | undefined;
+};
+export declare const getLastOffset: (id: string, placement: MessagePlacement) => number;
+export declare const getOffsetOrSpace: (id: string, offset: number, placement: MessagePlacement) => number;