Batch apply changes in Cluster mode

[olensmar]

When inspecting a cluster I sometimes need to change multiple resources as one action - instead of modifying and applying them one-by-one.. Perhaps Monokle could

• save all changes temporarily (in memory?) and maintain a list of changed resources
• allow me to add new resources temporarily also
• allow me to diff each changed resource against its deployed counterpart
• allow me to do a "cluster compare" between my changes and the state of the cluster so I can get an overview of the impact my changes would have before applying
• allow me to apply all changes at once

(once we have git support I would like a "Create Pull Request" action for my changed resources)