Adds capacitors and inductors [Pending Textures]

[jrddunbr]

This adds:

• Capacitors
• Inductors
• Diode (including a model)
• Voltage source is now 5.0 volts
• Resistor is now 100 ohms
• Currents in the plotter are now (mostly) correct
• circuits typed into the server chat will print out the circuits IDetail and node connectivity into the Minecraft server log
  • todo in future: make this a proper chat command (a different pull request)
  • This was essential for debugging a bunch of issues and will stay in for a little while

Pending:

• [x] Capacitor Texture
• [x] Inductor Texture

[jrddunbr]

This is code complete, all I will be adding to this at this point is the actual textures I need to make it not the blank default textures they currently are.

[jrddunbr]

OK, this is done. Ready for review.