refactor(web): rename tree-sitter.js to web-tree-sitter.js

This is not breaking for consumers of the web bindings, nor the
playground as both filenames will be kept in the .github.io repo

cli/src/playground.html

@@ -92,7 +92,7 @@
   <script>LANGUAGE_BASE_URL = "";</script>
   <script type="module" src="playground.js"></script>
   <script type="module">
-    import * as TreeSitter from './tree-sitter.js';
+    import * as TreeSitter from './web-tree-sitter.js';
     window.TreeSitter = TreeSitter;
     setTimeout(() => window.initializePlayground({local: true}), 1)
   </script>