Add possibility to save project to non binary format.

as a developer i really mis a possibility to save this components and project in a structured format instead of binary. then it would be possible to generate components based on our objects and make the refinements inside BS studio.

at this point, the only possibility is importing html but then the components are not recognized as such and the power of the bootstrap studio is then reduced to 0 a 10 percent of the actual capabilities.

its just a json file that has been gzip'd pretty easy to open...