feat: Add support for custom file names in screenshot functionality

packages/artplayer-vitepress/docs/advanced/property.md

@@ -344,7 +344,7 @@ art.on('ready', () => {
 
 -   Type: `Function`
 
-下载当前视频帧的截图
+下载当前视频帧的截图, 可选参数为截图名字
 
 <div className="run-code">▶ Run Code</div>
 
@@ -355,7 +355,7 @@ var art = new Artplayer({
 });
 
 art.on('ready', () => {
-    art.screenshot();
+    art.screenshot('your-name');
 });
 ```
 

packages/artplayer-vitepress/docs/en/advanced/property.md

@@ -338,7 +338,7 @@ Some videos do not have a duration, such as videos that are being live streamed
 
 -   Type: `Function`
 
-Download a screenshot of the current video frame
+Download a screenshot of the current video frame, optional parameter is the screenshot name
 
 <div className="run-code">▶ Run Code</div>
 
@@ -349,9 +349,10 @@ var art = new Artplayer({
 });
 
 art.on('ready', () => {
-    art.screenshot();
+    art.screenshot('your-name');
 });
 ```
+
 ## `getDataURL`
 
 - Type: `Function`

packages/artplayer/types/player.d.ts

@@ -72,7 +72,7 @@ export declare class Player {
     switchQuality(url: string): Promise<void>;
     getDataURL(): Promise<string>;
     getBlobUrl(): Promise<string>;
-    screenshot(): Promise<string>;
+    screenshot(name?: string): Promise<string>;
     airplay(): void;
     autoSize(): void;
     autoHeight(): void;