[godot] Added example showing how to load files from disk.

spine-godot/example-v4/examples/13-load-from-disk/load-from-disk.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://dr1u7vj8mm6ed"]
+
+[ext_resource type="Script" path="res://examples/13-load-from-disk/load_from_disk.gd" id="1_krs2n"]
+
+[node name="Load-from-disk" type="Node2D"]
+script = ExtResource("1_krs2n")

spine-godot/example-v4/examples/13-load-from-disk/load_from_disk.gd

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+extends Node2D
+
+func _ready():
+	# Load the skeleton file
+	var skeleton_file_res = SpineSkeletonFileResource.new();
+	skeleton_file_res.load_from_file("/Users/badlogic/workspaces/spine-runtimes/examples/coin/export/coin-pro.skel");
+
+	# Load the atlas file
+	var atlas_res = SpineAtlasResource.new();
+	atlas_res.load_from_atlas_file("/Users/badlogic/workspaces/spine-runtimes/examples/coin/export/coin.atlas");
+
+	# Create a skeleton data resource, you can share this across multiple sprites
+	var skeleton_data_res = SpineSkeletonDataResource.new();
+	skeleton_data_res.skeleton_file_res = skeleton_file_res;
+	skeleton_data_res.atlas_res = atlas_res
+
+	# Create a sprite from the skeleton data and add it as a child
+	var sprite = SpineSprite.new();
+	sprite.skeleton_data_res = skeleton_data_res;
+	sprite.position.x = 200;
+	sprite.position.y = 200;
+	sprite.get_animation_state().set_animation("animation", true, 0);
+	self.add_child(sprite)
+	pass