[IDEA Plugin] Generate scene class from context menu

[Humberd]

We could detect if the project is a Godot Project, then we could include an option to generate a class, where you could pick its subtype (Spatial, Node2D, etc.) similar how Godot editor currently does. It would automatically add the @RegisterClass and optionally include _ready() and/or _onDestroy(). What do you think?

[CedNaru]

Good Idea, so far it's only made from the Godot editor.