Add a new method for EditorInspector "get_object_edited"

[RadiantUwU]

Would allow plugins to know which object is being edited, for a very useful case: live-editing, sending changes back to the server

Valid use:

@tool
extends EditorPlugin

func _print_property_edited(property: String):
	print(get_editor_interface().get_inspector().get_object_edited(),".",property)

func _enter_tree():
	# Initialization of the plugin goes here.
	get_editor_interface().get_inspector().property_edited.connect(_print_property_edited)


func _exit_tree():
	# Clean-up of the plugin goes here.
	get_editor_interface().get_inspector().property_edited.disconnect(_print_property_edited)

[YuriSizov]

Hey, thanks for making a PR. There is already one open that does exactly that, so I'm going to close this one as a duplicate of #81425.

Thanks for your contribution nevertheless!