syncyomi: init at 1.0.0

[eriedaberrie]

Description of changes

SyncYomi, an open-source project to synchronize Tachiyomi manga reading progress and library across multiple devices.

I've also written a NixOS service module that is working for me so far but will probably need some more polishing before a PR (documentation, hardening, adding postgres support, etc.).

This replaces my previous PR #301155 which needed to fix several build errors and then another upstream release happened in the meantime, so I opted to make a new PR for this (also because I had accidentally based that PR off of my fork's master branch which was slightly inconvenient for me).

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[RatCornu]

I made a module for this package: I'll make a PR when this will be merged!