Add optional larger osc footprint for Q2

[roscopeco]

(Raising off the back of #333 which was originally raised by HeathenUK)

In the same way as we support dual sizes for UART capacitors, we should support both DIP8 and DIP16 oscillator cans for Q2.

Not done on classic v2 boards due to lots of moving around but should definitely keep in mind for future version(s) (hence this ticket).