Fixing contrib permissions

Dependencies

• [2] SL45MHGV +contrib/pijul2svg.sh (license as usual: GPL-2.0-or-later)
• [3] HYRH4E55 rustfmt.toml: init
• [4] HDGRZISM Version updates
• [5] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [6] DJ5JYH3K COPYING
• [7] QQZNSB26 Permission update (after #X243)
• [8] X243Z3Y5 Recording only the required metadata (can even be changed later!)
• [9] YTQS4ES3 Fixing a parsing problem (related to permissions), and the associated permissions
• [10] G734WNM6 flake.nix: use crate2nix

Change contents

• file move: contrib (dxwrx-rx-r) → contrib (d--r------)
  [1.0]

  [2.10]
• file move: pijul2svg.sh (-xwrx-rx-r) → pijul2svg.sh (---r------)
  [2.10]

  [2.26]