[New Feature] Support SAM 2.1 (#59)

* support sam 2.1

* refine config path and ckpt path

* update README

demo/frontend/src/common/components/toolbar/ToolbarBottomActionsWrapper.tsx

@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {spacing} from '@/theme/tokens.stylex';
+import stylex from '@stylexjs/stylex';
+import {PropsWithChildren} from 'react';
+
+const styles = stylex.create({
+  container: {
+    display: 'flex',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    paddingTop: {
+      default: spacing[2],
+      '@media screen and (max-width: 768px)': spacing[4],
+    },
+    paddingBottom: spacing[6],
+    paddingHorizontal: spacing[6],
+  },
+});
+
+export default function ToolbarBottomActionsWrapper({
+  children,
+}: PropsWithChildren) {
+  return <div {...stylex.props(styles.container)}>{children}</div>;
+}