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')

This adds dump_percent to the args if not passed.
Previous commits were functional however failing test_namespace because the test_namespace function checks for all accesses to args in the project however the previous code block added args.append which was not part of the Namespace but still valid.

As discussed by #70 we comment out using psutil.disk_usage to warn the user that they have enough space for inference:

        # disabled because of python 3.12 bug
        # free = psutil.disk_usage(path.__fspath__()).free
        # if free > 2 * 2 ** 30:
        #     ...
        # elif free > 1 * 2 ** 30:
        #     warnings.warn(f'Low disk space: {free / 2 ** 30} GB')
        # else:
        #     warnings.warn(f'Very low disk space: {free / 2 ** 20} MB')

This is not a very important feature however it is currently incompatible with the latest version of python.

We handle cases where the input dir is not set when trying to visualize it:

    def __repr__(self):
        if not self.original:
            return f'{super().__repr__()} not set'
        return self.original

    def __str__(self):
        if not self.original:
            return f'{super().__repr__()} not set'
        return self.original