feat: added a basic native adapter

it uses basic html api to play the video and do normal things on video like pause and seek

src/adapters/Native.ts

@@ -0,0 +1,72 @@
+/**
+ * native video
+ *
+ * author: db123 at db
+ * creation: 23/4/2026
+ */
+
+import { AdapterAPI } from "../types";
+
+export class NativeAdapter implements AdapterAPI {
+  private video: HTMLVideoElement;
+
+  /**
+   * @param video The targeted video element
+   */
+  constructor(video: HTMLVideoElement) {
+    this.video = video;
+  }
+
+  load(): void {
+    this.video.load();
+  }
+
+  play(): void {
+    this.video.play().catch((e) => console.warn("Play failed:", e));
+  }
+
+  pause(): void {
+    this.video.pause();
+  }
+
+  destroy(): void {
+    this.pause();
+    this.video.load();
+  }
+
+  seek(time: number): void {
+    if (this.video.fastSeek) {
+      this.video.fastSeek(time);
+    } else {
+      this.video.currentTime = time;
+    }
+  }
+
+  currentTime(): number {
+    return this.video.currentTime;
+  }
+
+  duration(): number {
+    return this.video.duration;
+  }
+
+  volume(volume: number): void {
+    this.video.volume = volume;
+  }
+
+  currentVolume(): number {
+    return this.video.volume;
+  }
+
+  mute(muted?: boolean): void {
+    if (muted !== undefined) {
+      this.video.muted = muted;
+    } else {
+      this.video.muted = !this.video.muted;
+    }
+  }
+
+  muted(): boolean {
+    return this.video.muted;
+  }
+}

src/adapters/index.ts

@@ -0,0 +1 @@
+export { NativeAdapter } from "./Native";