fix raster.inference() args

[dhodcz2]

Previously --dump_percent was hardcoded to args. Now this:

        args = [
            "python",
            "-m",
            "tile2net",
            "inference",
            *args,
        ]
        sargs = set(args)
        if '--city_info' not in sargs:
            args.extend(['--city_info', str(info)])
        if '--dump_percent' not in sargs:
            args.extend(['--dump_percent', str(self.dump_percent)])
        if '--interactive' not in sargs:
            args.append('--interactive')

(Previous closed PR was on top of old diverging commits)