chore: import upstream snapshot with attribution

licenserc.toml

@@ -0,0 +1,36 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
+headerPath = "Apache-2.0-ASF.txt"
+
+excludes = [
+  "docs/release/**",
+  "ui/build/**",
+  "answer-data/**",
+  "NOTICE",
+  "DISCLAIMER",
+  "Makefile",
+  "go.mod",
+  "go.sum",
+  "ui/.eslintignore",
+  "ui/.browserslistrc",
+  "ui/.npmrc",
+  "ui/.env.*",
+  "script/plugin_list",
+  "charts/templates/_helpers.tpl",
+  "charts/.helmignore",
+]