Restructures Parameters

Each parameter now belongs to a contextual struct

	modified:   pandora_vision_hole_detector/cfg/depth_cfg.cfg
	modified:   pandora_vision_hole_detector/cfg/hole_fusion_cfg.cfg
	modified:   pandora_vision_hole_detector/cfg/rgb_cfg.cfg
	modified:   pandora_vision_hole_detector/include/utils/edge_detection.h
	modified:   pandora_vision_hole_detector/include/utils/parameters.h
	modified:   pandora_vision_hole_detector/src/depth_node/depth.cpp
	modified:   pandora_vision_hole_detector/src/depth_node/hole_detector.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/depth_filters.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/filters_resources.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/hole_fusion.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/hole_merger.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/planes_detection.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/rgb_filters.cpp
	modified:   pandora_vision_hole_detector/src/rgb_node/hole_detector.cpp
	modified:   pandora_vision_hole_detector/src/rgb_node/rgb.cpp
	modified:   pandora_vision_hole_detector/src/synchronizer_node/rgb_depth_synchronizer.cpp
	modified:   pandora_vision_hole_detector/src/utils/blob_detection.cpp
	modified:   pandora_vision_hole_detector/src/utils/bounding_box_detection.cpp
	modified:   pandora_vision_hole_detector/src/utils/edge_detection.cpp
	modified:   pandora_vision_hole_detector/src/utils/histogram.cpp
	modified:   pandora_vision_hole_detector/src/utils/hole_filters.cpp
	modified:   pandora_vision_hole_detector/src/utils/noise_elimination.cpp
	modified:   pandora_vision_hole_detector/src/utils/parameters.cpp
	modified:   pandora_vision_hole_detector/src/utils/visualization.cpp