[depends] - add boblight to depends but don't install it (used for compi...

...ling the needed libboblight binary for the boblight addon) - seems this was lost since frodo ...

Well we had it in our depends at frodo times but it got lost during unified deps. I used that for compiling the libboblight dylib/so files for our boblight python addon. Since this is not hooked up to anything we can savly apply this to helix to have it (just in case we need to compile the lib for new platforms - e.x. android-x86 soon).