* add state machine
state_machine test
state_machine_update
* add state machine test/doc
* state machine update
* state machine generate_plantuml() can show diagram by using https://www.plantuml.com/plantuml/
* refactor: rename files and update references for inverted pendulum and path tracking modules
* refactor: rename inverted pendulum control files and update type check references
* refactor: update import statements to use consistent casing for InvertedPendulum module
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* add contribution doc
* add contribution doc
* add contribution doc
* add contribution doc
* add contribution doc
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs
* clean up SLAM docs