GH-22: Add CODEOWNERS (#444)

Fixes #22.

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>

.github/CODEOWNERS

@@ -0,0 +1,56 @@
+# 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.
+#
+# Any committer can add themselves to any of the path patterns
+# and will subsequently get requested as a reviewer for any PRs
+# that change matching files.
+#
+# This file uses .gitignore syntax with a few exceptions see the
+# documentation about the syntax: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
+
+# modules
+/adapter/       @lidavidm @laurentgo @wgtmac
+/algorithm/     @lidavidm @laurentgo @wgtmac
+/arrow-format/  @lidavidm @laurentgo @wgtmac
+/c/             @lidavidm @laurentgo @wgtmac
+/compression/   @lidavidm @laurentgo @wgtmac
+/dataset/       @lidavidm @laurentgo @wgtmac
+/flight/        @lidavidm @laurentgo @wgtmac
+/format/        @lidavidm @laurentgo @wgtmac
+/gandiva/       @lidavidm @laurentgo @wgtmac
+/memory/        @lidavidm @laurentgo @wgtmac
+/performance/   @lidavidm @laurentgo @wgtmac
+/tools/         @lidavidm @laurentgo @wgtmac
+/vector/        @lidavidm @laurentgo @wgtmac
+CMakeLists.txt  @lidavidm @laurentgo @wgtmac
+
+# release scripts
+/ci/   @lidavidm @laurentgo @wgtmac @kou
+/dev/  @lidavidm @laurentgo @wgtmac @kou
+
+# PR CI and repository files
+/.github/                @lidavidm @laurentgo @wgtmac @kou
+/.asf.yaml               @lidavidm @laurentgo @wgtmac @kou
+/.env                   @lidavidm @laurentgo @wgtmac
+/.pre-commit-config.yaml @lidavidm @laurentgo @wgtmac
+/Brewfile                @lidavidm @laurentgo @wgtmac
+/docker-compose.yaml     @lidavidm @laurentgo @wgtmac
+
+# Java specific
+/.mvn/  @lidavidm @laurentgo @wgtmac
+/bom/   @lidavidm @laurentgo @wgtmac
+pom.xml @lidavidm @laurentgo @wgtmac