RANGER-5236: Setup apache/ranger-tools and enable contributions via PR

Author: kumaab

.asf.yaml

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+# 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.
+
+# https://cwiki.apache.org/confluence/display/INFRA/git+-+.asf.yaml+features
+
+# Enable the next-gen .asf.yaml parser
+meta:
+  nextgen: true
+
+github:
+  description: "Utilities for docker base image development/testing and examples to use Apache Ranger"
+  homepage: https://ranger.apache.org
+  labels:
+    - apache
+    - ranger
+    - docker
+  autolink_jira:
+    - RANGER
+  enabled_merge_buttons:
+    squash:  true
+    merge:   false
+    rebase:  false
+  protected_branches:
+    main: {}
+  collaborators:
+    - adoroszlai
+
+notifications:
+  commits:              commits@ranger.apache.org
+  issues:               dev@ranger.apache.org
+  pullrequests:         dev@ranger.apache.org
+  pullrequests_comment: dev@ranger.apache.org
+  jira_options:         worklog link label

.github/pull_request_template.md

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+## What changes were proposed in this pull request?
+
+(Please fill in changes proposed in this fix. Create an issue in ASF JIRA before opening a pull request and
+set the title of the pull request which starts with
+the corresponding JIRA issue number. (e.g. RANGER-XXXX: Fix a typo in YYY))
+
+
+## How was this patch tested?
+
+(Please explain how this patch was tested. Ex: unit tests, manual tests)
+(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

.gitignore

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+# IntelliJ
+*.iml
+*.ipr
+*.iws
+.idea
+
+.DS_Store

NOTICE

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+Apache Ranger
+Copyright 2014-2025 The Apache Software Foundation
+
+This product includes software developed at The Apache Software Foundation (http://www.apache.org/).