Revert "Revert "use extended class from koishi-plugin-pics""

This reverts commit 37ea0c80.

src/config.ts

 import 'source-map-support/register';
-import { DefineSchema, RegisterSchema } from 'schemastery-gen';
-import { PicSourceInfo } from 'koishi-plugin-pics';
+import { DefineSchema, RegisterSchema } from 'koishi-thirdeye';
+import { PicSourceConfig } from 'koishi-plugin-pics';
 
 @RegisterSchema()
-export class PicsourceHeisiConfig implements PicSourceInfo {
-  constructor(config: PicsourceHeisiConfigLike) {}
-
-  @DefineSchema({ type: 'string', default: [], description: '图源标签' })
-  tags: string[];
-  @DefineSchema({ default: 1, description: '图源权重' })
-  weight: number;
-  @DefineSchema({ description: '图源描述' })
-  description?: string;
-  @DefineSchema({ description: '是否为默认图源' })
-  isDefault?: boolean;
-
-  // 给目标对象注入上述对象。
-  applyTo(target: PicSourceInfo) {
-    target.tags = this.tags;
-    target.weight = this.weight;
-    target.name = this.name;
-    target.description = this.description;
-    target.isDefault = this.isDefault;
+export class PicsourceHeisiConfig extends PicSourceConfig {
+  constructor(config: PicsourceHeisiConfigLike) {
+    super();
   }
 
   @DefineSchema({ description: '图源名称', default: 'heisi' })