WIP checkpoint: Implement Godot dedicated server scene + player spawning

.godot/.gdignore

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+

.godot/global_script_class_cache.cfg

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+list=[{
+"base": &"CharacterBody3D",
+"class": &"PlayerNode",
+"icon": "",
+"is_abstract": false,
+"is_tool": false,
+"language": &"GDScript",
+"path": "res://scripts/player_node.gd"
+}]