3D connexion support on Linux:

- Replace hidapi/linux/hid.c with the hidraw variant (link to udev)
- Add CMakeLists.txt for hidapi, refactor
- Add udev rules file (no installation so far)

src/slic3r/GUI/Mouse3DController.cpp

@@ -9,6 +9,8 @@
 
 #include <wx/glcanvas.h>
 
+// WARN: If updating these lists, please also update resources/udev/90-3dconnexion.rules
+
 static const std::vector<int> _3DCONNEXION_VENDORS =
 {
     0x046d,  // LOGITECH = 1133 // Logitech (3Dconnexion is made by Logitech)