Implemented R-Tree

Would like to switch the identifer of the hole to a random string.

demo/assets/scripts/environment/destructable/holes.gd

@@ -0,0 +1,34 @@
+extends RefCounted
+
+class_name Holes
+
+var holes: Dictionary[int, Hole]
+var counter: int = 0
+
+func _init() -> void:
+	self.holes = {}
+
+func add_hole(vectors: PackedVector2Array) -> Hole:
+	var hole = Hole.new(counter, vectors)
+	self.holes[counter] = hole
+	counter += 1
+	
+	return hole
+
+func remove_hole(hole_id: int):
+	self.holes.erase(hole_id)
+
+func get_hole(hole_id: int) -> Hole:
+	return self.holes[hole_id]
+
+func get_hole_verticies() -> PackedVector2Array:
+	var return_val: PackedVector2Array = []
+	for hole in holes.values():
+		return_val.append_array(hole.vectors)
+	return return_val
+
+func get_holes() -> Array[PackedVector2Array]:
+	var return_val: Array[PackedVector2Array] = []
+	for hole in holes.values():
+		return_val.append(hole.vectors)
+	return return_val