Overhaul Managed VCs

[Ryeera]

The current temporary VCs will be turned into a whole module for Managed VCs which will have many features. See the following issues for subtasks. This issue will be closed once the "Managed VCs Overhaul" milestone is reached.

#11 - Configuration of Managed VCs
#10 - Managed VCs can be permanent
#12 - Managed VCs can be private
#13 - There will be different roles for Managed VCs