Add Hog 3/4 Plugin

[fxedel]

They Hog3 and Hog4 libraries are downloadable online, but the fixture format is binary.

[MaartenJansen82]

With Hog 4 software it is possible to import/export (custom) fixtures in a XML format. So it should be possible to convert to Hog4 Xml, as long as the right terminology is used.
if you desire some help or example xml-files from specific fixtures, just let me know.

[FloEdelmann]

Oh great, thanks for sharing! But I think without the hardware to test this on, developing a plugin won't be feasible. Also, I won't have the time for this to do this myself. But I could give some hints and help with reviewing if anybody else would like to work on this.

So sharing some example fixture XML files here would be good anyway! Preferably fixtures that already are in OFL, so we have something to compare against. In the best case, all of the test fixtures would be best (but only providing some of them will already be a great help), because they cover all fixture features so we can check all special cases.