Draft: Redraw RJ non-magnetic symbols

After @cnieves1 did the nice RJ45s with the magnetics, it seems a good idea pre-8 to sync up the non-magnetic symbols. This is also connected to !3206 (merged),

This is a a draft to get some ideas, I'll expand to do all the other nPnC and RJs in the same way if we can get a nice pattern going.

Main problems:

• Pins 1-8 on left (like magnetics parts) or right (as current)
• Should we indicate tab-up or tab-down?
• Should LEDs go on the same side as the 1-8 pins or the other side?
• LEDs cathode up or down (current magnetics are cathode up)
• LED names as pin numbers (e.g. 9, 10, 11, 12), or descriptive (L1A, L1K, etc). I think pin numbers and probably atomic parts as the combinations of LED counts, colours, bi-colours, etc will get too hard to describe usefully.

For example:

1-8 on left, LEDs on right, cathodes up: