Labels that stick to component

[LeonMontealegre]

Is your feature request related to a problem? Please describe.

Describe the solution you'd like
It'd be nice to have a label that stays relative to another component.
Maybe in the selection popup for a component there could be a button like "Create Label" that creates a label relative to that component.

Describe alternatives you've considered
N/A

Additional context
N/A

[RussellABH]

Changes we want to add:

• "Fake select" the label that is connected to the main component
  • Done in a general sense, ie. any child should also be fake selected if the parent is selected
  • Make the child be deleted when the parent is
  • Make the child be copied when the parent is?
• Label should take on the title of parent when it's first made
• Make another issue for having lines from parent to child
• When a circuit is made from an expression, link the labels with the inputs
• Fix: When you rotate a label that goes off screen during rotation, the label doesn't show until the canvas is updated.

Relevant branch