feat: Implement PlaybackControls component and add i18n files for common terms in English, Spanish, and Chinese.

src/components/video-editor/PlaybackControls.tsx

@@ -100,9 +100,9 @@ export default function PlaybackControls({
 					aria-label={isFullscreen ? t("playback.exitFullscreen") : t("playback.fullscreen")}
 				>
 					{isFullscreen ? (
-						<Minimize className="w-3.5 h-3.5 fill-current" />
+						<Minimize className="w-3.5 h-3.5" />
 					) : (
-						<Maximize className="w-3.5 h-3.5 fill-current" />
+						<Maximize className="w-3.5 h-3.5" />
 					)}
 				</Button>
 			)}

src/i18n/locales/en/common.json

@@ -18,7 +18,9 @@
 	},
 	"playback": {
 		"play": "Play",
-		"pause": "Pause"
+		"pause": "Pause",
+		"fullscreen": "Fullscreen",
+		"exitFullscreen": "Exit Fullscreen"
 	},
 	"locale": {
 		"name": "English",

src/i18n/locales/es/common.json

@@ -18,7 +18,9 @@
 	},
 	"playback": {
 		"play": "Reproducir",
-		"pause": "Pausar"
+		"pause": "Pausar",
+		"fullscreen": "Pantalla completa",
+		"exitFullscreen": "Salir de pantalla completa"
 	},
 	"locale": {
 		"name": "Español",

src/i18n/locales/zh-CN/common.json

@@ -18,7 +18,9 @@
 	},
 	"playback": {
 		"play": "播放",
-		"pause": "暂停"
+		"pause": "暂停",
+		"fullscreen": "全屏",
+		"exitFullscreen": "退出全屏"
 	},
 	"locale": {
 		"name": "中文",