## Problem
When building openarm_ros2, the hardware interface tests fail because
the components_urdfs.hpp header from ros2_control_test_assets cannot be
found as
follows.
```console
$ colcon build
...
/home/otegami/work/cpp/ros2_ws/src/openarm_ros2/openarm_hardware/test/test_openarm_hardware.cpp:21:10: fatal error: ros2_control_test_assets/components_urdfs.hpp: No such file or directory
21 | #include "ros2_control_test_assets/components_urdfs.hpp"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
gmake[2]: *** [CMakeFiles/test_openarm_hardware.dir/build.make:79: CMakeFiles/test_openarm_hardware.dir/test/test_openarm_hardware.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:237: CMakeFiles/test_openarm_hardware.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2
---
Failed <<< openarm_hardware [14.9s, exited with code 2]
Summary: 6 packages finished [15.1s]
1 package failed: openarm_hardware
5 packages had stderr output: openarm_bimanual_bringup openarm_bimanual_description openarm_bringup openarm_description openarm_hardware
1 package not processed
```
## Cause
Although ros2_control_test_assets was installed, it wasn’t declared as a
dependency of the GMock test
target.
## Solution
Add ros2_control_test_assets as a test dependency in both the
CMakeLists.txt and in the package.xml,
ensuring the test can locate its headers.
We are standardizing our software under Apache License 2.0. This PR
replaces existing BSD 3-Clause License with Apache 2.0 in this
repository.
## About Copyright
All commits in this repository are made by Reazon Holdings, Inc.
members, so the copyright has been added as follows.
- `Copyright 2025 Reazon Holdings, Inc.`
```console
$ git shortlog -sn
55 Thomason Zhou
14 thomason
5 takuya kodama
1 Fujimoto Seiji
1 edwin-giang
1 toki
```
## How it was done
We added the new license header directory by directory, with each commit
covering a single directory to make review easier.
To ensure there are no missing files, we ran the following commands.
```
$ grep -RIL --exclude-dir='.git' --exclude='*.stl' "Apache License, Version 2.0" .
./openarm_bringup/README.md
./openarm_bimanual_moveit_config/README.md
./openarm_bimanual_description/urdf/openarm_bimanual.urdf
./.gitignore
./README.md
./openarm_description/urdf/openarm.urdf
./openarm_description/resource/openarm_description
```
The following files are auto-generated.
- openarm_bimanual_description/urdf/openarm_bimanual.urdf
- openarm_description/urdf/openarm.urdf
