[New Feature] Support SAM 2.1 (#59)

* support sam 2.1

* refine config path and ckpt path

* update README

demo/frontend/schemas/video-api-schema.graphql

@@ -0,0 +1,143 @@
+# 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.
+
+"""
+The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as `"4"`) or integer (such as `4`) input value will be accepted as an ID.
+"""
+scalar GlobalID
+  @specifiedBy(url: "https://relay.dev/graphql/objectidentification.htm")
+
+type Mutation {
+  createDeletionId: String!
+  acceptTos: Boolean!
+  acceptTermsOfService: String!
+  uploadVideo(
+    file: Upload!
+    startTimeSec: Float = null
+    durationTimeSec: Float = null
+  ): Video!
+  uploadSharedVideo(file: Upload!): SharedVideo!
+  uploadAnnotations(file: Upload!): Boolean!
+}
+
+"""
+An object with a Globally Unique ID
+"""
+interface Node {
+  """
+  The Globally Unique ID of this object
+  """
+  id: GlobalID!
+}
+
+"""
+Information to aid in pagination.
+"""
+type PageInfo {
+  """
+  When paginating forwards, are there more items?
+  """
+  hasNextPage: Boolean!
+
+  """
+  When paginating backwards, are there more items?
+  """
+  hasPreviousPage: Boolean!
+
+  """
+  When paginating backwards, the cursor to continue.
+  """
+  startCursor: String
+
+  """
+  When paginating forwards, the cursor to continue.
+  """
+  endCursor: String
+}
+
+type Query {
+  defaultVideo: Video!
+  videos(
+    """
+    Returns the items in the list that come before the specified cursor.
+    """
+    before: String = null
+
+    """
+    Returns the items in the list that come after the specified cursor.
+    """
+    after: String = null
+
+    """
+    Returns the first n items from the list.
+    """
+    first: Int = null
+
+    """
+    Returns the items in the list that come after the specified cursor.
+    """
+    last: Int = null
+  ): VideoConnection!
+  sharedVideo(path: String!): SharedVideo!
+}
+
+type SharedVideo {
+  path: String!
+  url: String!
+}
+
+scalar Upload
+
+type Video implements Node {
+  """
+  The Globally Unique ID of this object
+  """
+  id: GlobalID!
+  path: String!
+  posterPath: String
+  width: Int!
+  height: Int!
+  url: String!
+  posterUrl: String!
+}
+
+"""
+A connection to a list of items.
+"""
+type VideoConnection {
+  """
+  Pagination data for this connection
+  """
+  pageInfo: PageInfo!
+
+  """
+  Contains the nodes in this connection
+  """
+  edges: [VideoEdge!]!
+}
+
+"""
+An edge in a connection.
+"""
+type VideoEdge {
+  """
+  A cursor for use in pagination
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge
+  """
+  node: Video!
+}