Implement Resources presets and Inspector properties presets&history for Resource type properties

[me2beats]

I often create several similar resources just to test which one is better.
If I'm sure which one is better I can delete other similar resources.
The problem is there is no a way to switch between them with one click.
I suggest:

• properties presets: a dropdown from where you can select a resource for a property with one click
  you can add any Resource to presets list and remove from it.
  These presets are per property, that is you can have property button pressed with presets stylebox1.tres, stylebox2.tres
  and button hover with presets stylebox3.tres, stylebox4.tres,
  Selecting a preset just sets the Resource to the property.
  The presets should be stored somewhere maybe in the scene file

• property history drop-down.
  Same but Resources list is created automatically, depending on the undo history. The history should be global I guess, not per property.
  And it could be stored in project.godot, to be able to access it then you reload the project

• Resources presets
  You can save all properties values as a preset. This is per Resource. The data could be stored in the resource itself.