Over the last week, we worked on board systems and did a little work on the multimeter

Added a list view for board components

Added a view for connections between elements (A more detailed view will be available via the specifications menu and the component list)

In the early stages of development, the multimeter will support 3 types of elements (resistor, capacitor, and diode) and will measure resistance. Basically, it will be of limited use for now, but as we improve the electrical model, everything together will allow for a very detailed simulation.
