feat: add artplayer-plugin-audio-track for audio synchronization with video

- Implemented the audio track plugin for ArtPlayer, allowing audio to be synchronized with video playback.
- Added main functionality in `src/index.js` to handle audio playback, synchronization, and event listeners for play, pause, seek, and volume changes.
- Created TypeScript definitions for the plugin in `types/artplayer-plugin-audio-track.d.ts`.
- Included necessary build files in `dist/` for various module formats (CommonJS, ES Module, and legacy).
- Updated package metadata in `package.json` and added a README for documentation.
- Added `.npmignore` to exclude unnecessary files from the package.

docs/assets/ts/artplayer.d.ts

@@ -126,6 +126,8 @@ export interface Subtitle {
   onVttLoad?: (vtt: string) => string
 }
 
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 export interface SettingOption extends Omit<Setting, 'html' | 'icon' | 'tooltip'> {
   html: string
   icon: string | undefined
@@ -237,6 +239,10 @@ export interface Quality {
   url: string
 }
 
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 export type AspectRatio = 'default' | '4:3' | '16:9' | (`${number}:${number}` & Record<never, never>)
 export type PlaybackRate = 0.5 | 0.75 | 1.0 | 1.25 | 1.5 | 1.75 | 2.0 | (number & Record<never, never>)
 export type Flip = 'normal' | 'horizontal' | 'vertical' | (string & Record<never, never>)
@@ -346,6 +352,15 @@ export declare class Player {
   reset(): void
 }
 
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 export type CustomType
   = | 'flv'
     | 'm3u8'
@@ -754,6 +769,9 @@ declare module 'artplayer/i18n/*' {
   export default lang
 }
 
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 export type Bar = 'loaded' | 'played' | 'hover'
 
 export interface Events {
@@ -853,28 +871,15 @@ export interface CssVar {
   '--art-theme': string
   '--art-font-color': string
   '--art-background-color': string
-  '--art-font-size-sm': string
   '--art-text-shadow-color': string
   '--art-transition-duration': string
-  '--art-ease-standard': string
   '--art-padding': string
   '--art-border-radius': string
-  '--art-mobile-padding': string
-  '--art-mobile-radius': string
-  '--art-radius-sm': string
-  '--art-space-xxs': string
-  '--art-space-xs': string
-  '--art-surface-hover-color': string
-  '--art-surface-border-color': string
-  '--art-surface-muted-color': string
-  '--art-surface-range-color': string
   '--art-progress-height': string
   '--art-progress-color': string
   '--art-progress-top-gap': string
   '--art-hover-color': string
   '--art-loaded-color': string
-  '--art-tip-padding': string
-  '--art-tip-offset': string
   '--art-state-size': string
   '--art-state-opacity': number
   '--art-bottom-height': string
@@ -886,7 +891,6 @@ export interface CssVar {
   '--art-control-opacity': number
   '--art-control-icon-size': string
   '--art-control-icon-scale': number
-  '--art-touch-hit-size': string
   '--art-volume-height': string
   '--art-volume-handle-size': string
   '--art-lock-size': string
@@ -897,7 +901,6 @@ export interface CssVar {
   '--art-settings-max-height': string
   '--art-selector-max-height': string
   '--art-contextmenus-min-width': string
-  '--art-contextmenu-padding-x': string
   '--art-subtitle-font-size': string
   '--art-subtitle-gap': string
   '--art-subtitle-bottom': string
@@ -908,13 +911,6 @@ export interface CssVar {
   '--art-scrollbar-background': string
   '--art-scrollbar-background-hover': string
   '--art-mini-progress-height': string
-  '--art-shadow-low': string
-  '--art-shadow-medium': string
-  '--art-shadow-high': string
-  '--art-shadow-elevated': string
-  '--art-icon-small-size': string
-  '--art-overlay-dim': string
-  '--art-overlay-strong': string
 }
 
 export interface Config {
@@ -999,6 +995,8 @@ export interface Config {
   ]
 }
 
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 export interface Selector {
   /**
    * Whether the default is selected
@@ -1130,6 +1128,18 @@ export interface ComponentOption {
   onSelect?: (this: Artplayer, selector: Selector, element: HTMLElement, event: Event) => void
 }
 
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 export type {
   Config,
   Events,
@@ -1319,5 +1329,5 @@ export default class Artplayer extends Player {
   } & Record<string, unknown>
 }
 
-export = Artplayer
-export as namespace Artplayer;
+export = Artplayer;
+export as namespace Artplayer;