Add composer.json for Avalynx datatable assets

Introduce a `composer.json` file to manage Avalynx datatable's asset files. This includes both production and development file paths for streamlined dependency handling.

Author: jschwind

assetscomposer.json

@@ -0,0 +1,13 @@
+{
+  "name": "avalynx/avalynx-datatable",
+  "files": [
+    "dist/css/avalynx-datatable.css",
+    "dist/js/avalynx-datatable.esm.js",
+    "dist/js/avalynx-datatable.js"
+  ],
+  "files-dev": [
+    "src/css/avalynx-datatable.css",
+    "src/js/avalynx-datatable.esm.js",
+    "src/js/avalynx-datatable.js"
+  ]
+}