Create a Navigation Component for 2D and 3D

[AlecSouthward]

Could be a useful addition to the list of Components...

Previously written code for 2D version:

@icon("../../module.svg")
extends NavigationAgent2D
class_name NavigationComponent2D
## Component for simplifying the use of the NavigationAgent2D.
##
## @experimental

@export var velocity_component : VelocityComponent2D

## Minimum distance from the target position.
@export var min_target_dist := 3.0

## Speed at which the agent must slowdown when reaching the target.
@export var slowdown_rate := 1.0

## Target node to follow (Follows global position).
@export var target : Node2D

func _ready() -> void:
	if (!velocity_component):
		printerr("Missing velocity component on " + name + " in " + owner.name)

func _process(_delta: float) -> void:
	if (target):
		target_position = target.global_position

func get_target_dir() -> Vector2:
	var dir = (target_position - owner.global_position).normalized()
	return dir

func get_next_pos_dir() -> Vector2:
	var dir = (get_next_path_position() - owner.global_position).normalized()
	return dir

func follow_path():
	if (distance_to_target() < min_target_dist):
		velocity_component.slowdown(slowdown_rate)
		print("wo")
		return
	
	velocity_component.max_velocity(get_next_pos_dir())
	set_velocity_forced(velocity_component.velocity)
	print(velocity)