[Prefab suggestion] Add possibility to Apply one Parameter or selected group of Parameters to Prefab

[ElevenArt]

Better workflow for Prefab editor and Prefab instance.

Currently, in both of these cases, there are only options Revert, Revert All and Apply All in the Context Menu.

1. Add "Apply to Prefab" to Context Menu in Properties panel, for Apply one Parameter only to Prefab
   [Feature Request] Apply prefab modification in context menu #1013

2. Also add "Apply" to Context Menu in View Changes

The current solution in View Changes panel allow users to select only one Parameter. This opens the possibility to select group of Parameters with Ctrl key and "Apply" it to Prefab in one shot.

This would allow users to experiment with the parameters in one of the Prefab instances on the scene and after tuning the parameters, Apply for example 5 of 10 parameters in one shot, so that we don't have to Apply the parameters only one at a time, which would simplify and speed up workflow with Prefabs and Prefab Instances.