Added test for nav2_dwb_controller / dwb_plugins / LimitedAccelGenerator (#2032)

* Added a test with controller_frequency of 0. The controller should get a default frequency of 20.

* Add kinematic parameters test (#2031)

* Add kinematic parameters tests.

* Solve uncrustify error.

* [WIP fixing CI] changing gazebo base to my fork for testing (#2034)

* changing gazebo base to my fork for testing

* adding buffer header per TF2 API changes

* moving header to header

* Adding additional SmacPlanner tests (#2036)

* adding some more tests to smac_planner

* addtl smac tests

* remove unused functions

* adding additional constants and smoothers tests (#2038)

* Added tests for different controller frequencies.

* Added a test with controller_frequency of 0. The controller should get a default frequency of 20.

* Added tests for different controller frequencies.

* Solve uncrustify issue.

Co-authored-by: Steve Macenski <stevenmacenski@gmail.com>