Docs - benchmarks new solution (#14396)

* add bench csv
* Update custom.css
* images and scripts

docs/conf.py

@@ -179,8 +179,4 @@ def setup(app):
     app.add_js_file('js/custom.js')
     app.add_js_file('js/graphs.js')
     app.add_js_file('js/graphs_ov_tf.js')
-    try:
-        shutil.copytree(os.path.join(app.srcdir, 'csv'), os.path.join(
-            app.outdir, 'csv'), dirs_exist_ok=True)
-    except FileNotFoundError:
-        logger.warning('csv directory not found.')
+