feat: 添加爬虫状态监控功能

新增爬虫统计信息展示组件，包括后端数据查询接口和前端展示界面。同时简化日期显示格式并添加刷新提示功能。

widget/looker/frontend/wailsjs/go/models.ts

@@ -44,6 +44,26 @@ export namespace main {
 	        this.updatedAt = source["updatedAt"];
 	    }
 	}
+	export class CrawlInfoStat {
+	    source: string;
+	    count: number;
+	    latestUpdate: string;
+	    latestPublishDate: string;
+	    error: string;
+	
+	    static createFrom(source: any = {}) {
+	        return new CrawlInfoStat(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.source = source["source"];
+	        this.count = source["count"];
+	        this.latestUpdate = source["latestUpdate"];
+	        this.latestPublishDate = source["latestPublishDate"];
+	        this.error = source["error"];
+	    }
+	}
 	export class DatabaseConfig {
 	    Type: string;
 	    Host: string;