oscimp/gnss-sdr-1pps ? reverse-engineered prompt

Build me this fork of gnss-sdr so I can use it for 1 PPS output plus spoofing and jamming detection.

I want the project to work with a dual input SDR like the Ettus B210, and also support the file source mode for testing. Please make sure the build steps are clear and that the included patches can be applied to the right gnss-sdr version. I also need the configuration files wired up so I can turn on PPS correction, choose the clock source settings, and enable the spoofing protection and jamming detection features from the receiver config.

If anything depends on current gnss-sdr or GNU Radio details, look up the latest docs online if you need to. Keep it practical, so I can clone it, build it, and run a basic test without having to figure out the setup from scratch.