fix: .gitignore に embed-core 関連のビルド成果物を追加

embed-core エントリポイント追加時に .gitignore の更新が漏れていた。
- /docs/embed-core.js, /docs/embed-core-chunks
- /docs/e2e/*.d.ts, /docs/src/ (webpack が出力する型定義)
- docs/embed-core.js.LICENSE.txt を追跡対象に追加
- docs/embed.js.LICENSE.txt の MapLibre バージョン参照を更新 (v4.7.1 → v5.7.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yuiseki

.gitignore

@@ -70,9 +70,13 @@ typings/
 /docs/embed
 /docs/v1/embed
 /docs/embed.js
+/docs/embed-core.js
 /docs/v1/embed.js
 /docs/embed-chunks
+/docs/embed-core-chunks
 /docs/v1/embed-chunks
+/docs/e2e/*.d.ts
+/docs/src/
 /docs/types/
 .cache
 .DS_Store

docs/embed-core.js.LICENSE.txt

@@ -0,0 +1,4 @@
+/**
+ * MapLibre GL JS
+ * @license 3-Clause BSD. Full text of license: https://github.com/maplibre/maplibre-gl-js/blob/v5.7.0/LICENSE.txt
+ */

docs/embed.js.LICENSE.txt

@@ -1,4 +1,4 @@
 /**
  * MapLibre GL JS
- * @license 3-Clause BSD. Full text of license: https://github.com/maplibre/maplibre-gl-js/blob/v4.7.1/LICENSE.txt
+ * @license 3-Clause BSD. Full text of license: https://github.com/maplibre/maplibre-gl-js/blob/v5.7.0/LICENSE.txt
  */