Add package.xml (#139)

Signed-off-by: Addisu Z. Taddese <[email protected]>

.github/workflows/package_xml.yml

@@ -0,0 +1,11 @@
+name: Validate package.xml
+
+on:
+  pull_request:
+
+jobs:
+  package-xml:
+    runs-on: ubuntu-latest
+    name: Validate package.xml
+    steps:
+      - uses: gazebo-tooling/action-gz-ci/validate_package_xml@jammy

package.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0"?>
+<?xml-model href="http://download.ros.org/schema/package_format2.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="2">
+  <name>gz-plugin2</name>
+  <version>2.0.3</version>
+  <description>Gazebo Plugin : Cross-platform C++ library for dynamically loading plugins.</description>
+  <maintainer email="[email protected]">Alejandro Hernández Cordero</maintainer>
+  <license>Apache License 2.0</license>
+  <url type="website">https://github.com/gazebosim/gz-plugin</url>
+
+  <buildtool_depend>cmake</buildtool_depend>
+
+  <build_depend>gz-cmake3</build_depend>
+
+  <depend>gz-tools2</depend>
+  <depend>gz-utils2</depend>
+
+  <export>
+    <build_type>cmake</build_type>
+  </export>
+</package>