feat(player): use original audio language

- add option "Original" to audio languages, and set it by default
- when set to original, use the `role="main"` language

materialious/src/lib/components/Player.svelte

@@ -145,7 +145,13 @@
 	}
 
 	function restoreDefaultLanguage() {
-		if ($playerDefaultLanguage) {
+		if (!$playerDefaultLanguage || $playerDefaultLanguage === "original") {
+			const languageAndRole = player.getAudioLanguagesAndRoles().find(({ role }) => role === "main");
+			if (languageAndRole !== undefined) {
+				player.selectAudioLanguage(languageAndRole.language);
+				return;
+			}
+		} else if ($playerDefaultLanguage) {
 			const audioLanguages = player.getAudioLanguages();
 			const langCode = ISO6391.getCode($playerDefaultLanguage);
 

materialious/src/lib/components/Settings/Player.svelte

@@ -71,6 +71,7 @@
 		bind:value={defaultLanguage}
 		onchange={() => playerDefaultLanguage.set(defaultLanguage)}
 	>
+		<option selected={$playerDefaultLanguage === "original"} value="original">Original</option>
 		{#each languageNames as language}
 			<option selected={$playerDefaultLanguage === language} value={language}
 				>{titleCase(language)}</option