Move all of the grid files into new per-grid subdirectories

morph/README.rst

morph/grid/production/config.json

morph/grid/production/grid.nix

morph/grid/production/storage000-config.nix

morph/grid/production/storage000-hardware.nix

morph/grid/production/storage001-config.nix

morph/grid/production/storage001-hardware.nix

morph/grid/production/storage002-config.nix

morph/grid/production/storage002-hardware.nix

morph/grid/production/storage003-config.nix

morph/grid/production/storage003-hardware.nix

morph/grid/production/storage004-config.nix

morph/grid/production/storage004-hardware.nix

morph/grid/production/storage005-config.nix

morph/grid/production/storage005-hardware.nix

morph/grid/testing/config.json

morph/grid/testing/grid.nix

morph/grid/testing/testing001-hardware.nix

morph/lib/bootstrap-configuration.nix

morph/lib/issuer-aws.nix