refactor: add coastline editor script to index.html

Author: Azgaar

src/index.html

@@ -8592,6 +8592,7 @@
     <script defer src="modules/ui/route-group-editor.js?v=1.103.8"></script>
     <script defer src="modules/ui/ice-editor.js?v=1.111.0"></script>
     <script defer src="modules/ui/lakes-editor.js?v=1.106.0"></script>
+    <script defer src="modules/ui/coastline-editor.js?v=1.99.00"></script>
     <script defer src="modules/ui/labels-editor.js?v=1.113.2"></script>
     <script defer src="modules/ui/rivers-editor.js?v=1.106.0"></script>
     <script defer src="modules/ui/rivers-creator.js?v=1.106.0"></script>