GH-26: Add Codeowners (#160)

Adding initial CODEOWNERS file

tagging relevant people to review. If any of you don't want to be listed
on the CODEOWNERS just comment here and I'll take you off.

Fixes #26

---------

Co-authored-by: Sutou Kouhei <[email protected]>

Author: zeroshade

.github/CODEOWNERS

@@ -0,0 +1,43 @@
+# 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
+
+## Components
+/arrow/ @zeroshade
+/internal/ @zeroshade
+/parquet/ @zeroshade
+go.mod @zeroshade
+go.sum @zeroshade
+
+# release scripts
+/ci/ @zeroshade @kou @raulcd @assignUser
+/dev/ @zeroshade @kou @raulcd @assignUser
+.env @assignUser @zeroshade @kou @raulcd
+compose.yaml @zeroshade @assignUser @kou @raulcd
+.dockerallow @zeroshade @assignUser @kou @raulcd
+
+# PR CI and repository files
+/.github/ @zeroshade @kou @assignUser @raulcd
+.asf.yaml @zeroshade @kou @assignUser @raulcd
+.pre-commit-config.yaml @kou @zeroshade
+.golangci.yaml @kou @zeroshade