Make configuration parameters for escape obstacles path planner

[HussainGynai]

The constants in question are:

robocup-software/soccer/src/soccer/planning/planner/escape_obstacles_path_planner.cpp

Lines 18 to 19 in 38b370a

	ConfigDouble* EscapeObstaclesPathPlanner::step_size_config;
	ConfigDouble* EscapeObstaclesPathPlanner::goal_change_threshold;

We want them to be declared using the new ROS parameters interface. An example of using the parameters interface:
https://github.com/RoboJackets/robocup-software/blob/ros2/soccer/include/rj_vision_filter/params.hpp
https://github.com/RoboJackets/robocup-software/blob/ros2/soccer/src/rj_vision_filter/params.cpp

For the following parameter declaration:

DECLARE_NS_INT64(kVisionFilterParamModule, filter::health, init)

You can access it using filter::health::PARAM_min.