chore: add doap file (#4038)

Signed-off-by: tison <[email protected]>

doap.rdf

@@ -0,0 +1,48 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl"?>
+<rdf:RDF xml:lang="en"
+         xmlns="http://usefulinc.com/ns/doap#" 
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
+         xmlns:asfext="http://projects.apache.org/ns/asfext#"
+         xmlns:foaf="http://xmlns.com/foaf/0.1/">
+<!--
+
+    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.
+
+-->
+  <Project rdf:about="https://opendal.apache.org/">
+    <created>2023-02-27</created>
+    <license rdf:resource="https://spdx.org/licenses/Apache-2.0" />
+    <name>Apache OpenDAL</name>
+    <homepage rdf:resource="https://opendal.apache.org/" />
+    <asfext:pmc rdf:resource="https://opendal.apache.org" />
+    <shortdesc>Apache OpenDAL: access data freely.</shortdesc>
+    <description>Apache OpenDAL is a data access layer that allows users to easily and efficiently retrieve data from various storage services in a unified way.</description>
+    <bug-database rdf:resource="https://github.com/apache/opendal/issues" />
+    <mailing-list rdf:resource="https://opendal.apache.org/community/" />
+    <download-page rdf:resource="https://opendal.apache.org/download/" />
+    <category rdf:resource="https://projects.apache.org/category/data-engineering" />
+    <programming-language>Rust</programming-language>
+    <repository>
+      <GitRepository>
+        <location rdf:resource="https://github.com/apache/opendal.git"/>
+        <browse rdf:resource="https://github.com/apache/opendal"/>
+      </GitRepository>
+    </repository>
+  </Project>
+</rdf:RDF>