add sdf_models package

sdf_models/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+project(sdf_models)
+
+# Default to C99
+if(NOT CMAKE_C_STANDARD)
+  set(CMAKE_C_STANDARD 99)
+endif()
+
+# Default to C++17
+if(NOT CMAKE_CXX_STANDARD)
+  set(CMAKE_CXX_STANDARD 17)
+endif()
+
+if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  add_compile_options(-Wall -Wextra -Wpedantic)
+endif()
+
+# find dependencies
+find_package(ament_cmake REQUIRED)
+
+if(BUILD_TESTING)
+  find_package(ament_lint_auto REQUIRED)
+  # the following line skips the linter which checks for copyrights
+  # uncomment the line when a copyright and license is not present in all source files
+  #set(ament_cmake_copyright_FOUND TRUE)
+  # the following line skips cpplint (only works in a git repo)
+  # uncomment the line when this package is not in a git repo
+  #set(ament_cmake_cpplint_FOUND TRUE)
+  ament_lint_auto_find_test_dependencies()
+endif()
+
+install(DIRECTORY models DESTINATION share/${PROJECT_NAME})
+
+ament_package()

sdf_models/models/cube/model.config

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+<?xml version="1.0"?>
+<model>
+  <name>cube</name>
+  <sdf version="1.4">model.sdf</sdf>
+
+  <author>
+    <name>Splinter1984</name>
+    <email>rom.andrianov1984@gmail.com</email>
+  </author>
+
+  <description>
+    A simple cube.
+  </description>
+</model>

sdf_models/models/cube/model.sdf

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+<?xml version="1.0" ?>
+<sdf version="1.5">
+  <model name="cube">
+    <pose>0 0 0 0 0 0</pose>
+    <link name="link">
+      <collision name="collision">
+        <geometry>
+          <box>
+            <size>0.1 0.1 0.1</size>
+          </box>
+        </geometry>
+      </collision>
+      <visual name="visual">
+        <geometry>
+          <box>
+            <size>0.1 0.1 0.1</size>
+          </box>
+        </geometry>
+        <material>
+          <script>
+            <uri>file://media/materials/scripts/gazebo.material</uri>
+            <name>Gazebo/Grey</name>
+          </script>
+        </material>
+      </visual>
+    </link>
+  </model>
+</sdf>

sdf_models/package.xml

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+<?xml version="1.0"?>
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
+  <name>sdf_models</name>
+  <version>0.0.0</version>
+  <description>TODO: Package description</description>
+  <maintainer email="rom.andrianov1984@gmail.com">Splinter1984</maintainer>
+  <license>TODO: License declaration</license>
+
+  <buildtool_depend>ament_cmake</buildtool_depend>
+
+  <test_depend>ament_lint_auto</test_depend>
+  <test_depend>ament_lint_common</test_depend>
+
+  <export>
+    <build_type>ament_cmake</build_type>
+  </export>
+</package>