Add customizable DIP IC sockets

[RAPTOR7762]

Problem and proposed solution

In this forum post https://forum.fritzing.org/t/set-of-standard-wide-ic-sockets/27388

Someone requested a customizable DIP IC socket. I told him that it is possible to use a generic IC, but he told me that it would be better to have IC sockets

[KjellMorgenstern]

The forum post refers to

https://www.advanced.com/pdf/AIC_DIP_Sockets_Molded_16A_rev0.pdf

I think an open frame socket could work well, as it is easier to distinguish from an IC without a socket.

Also, it enables hacks like this:

So, Fritzing IC Sockets would look like two header rows, with bridges left and right, not further bridges.

Although in reality, many sockets have additional stabilization:

If we provide a minimal open socket, such additional stabilization can be quite easily added if desired for a custom part.

Workaround, and to give an idea how the socket would be used: Two headers, with an D31A* on top:

[RAPTOR7762]

Hi Kjell,

For the D31A* relay part, there is a problem on my side

https://github.com/fritzing/fritzing-parts/issues/406

Am I doing anything wrong, or is there something wrong with my Fritzing 1.0.4 and Fritzing 0.9.10 app