chore: add gh pages setting

Author: technote-space

.github/gh-pages.json

@@ -0,0 +1,8 @@
+{
+  "GH_PAGES_APP_ID": "editor",
+  "GH_PAGES_PLUGIN_SCRIPT": "./index.min.js",
+  "GH_PAGES_PLUGIN_STYLE": "./index.css",
+  "GH_PAGES_TITLE": "Marker Animation",
+  "GH_PAGES_TEMPLATE": "gutenberg",
+  "GH_PAGES_TRACKING_ID": "UA-78163306-3"
+}