* Add SIGTERM and SIGINT handlers to rosbag record

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Add unit test for rosbag record SIGINT handling
Add unit test for rosbag record SIGTERM handling

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Address review comments
Fix sending SIGINT to main process

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Revert added whitespace

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Revert SIGINT handler addition: use default

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Remove unnecessary wait

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Use BSD License

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Add test improvements

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Move test helper function

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Remove redundant test rosbag launch

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Add Amazon to new python test copyright

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Remove unrelated whitespace

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Split record cleanup unit tests
Add record cleanup unit test helper

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* Revert whitespace change

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>

* revert white space change

Co-authored-by: Dirk Thomas <dirk-thomas@users.noreply.github.com>

Signed-off-by: Devin Bonnie <dbbonnie@amazon.com>