refactor: split system into modules

modules/packages.nix

@@ -0,0 +1,75 @@
+{pkgs, ...}: {
+  environment.systemPackages = with pkgs; [
+    nil
+    statix
+    alejandra
+    nixpkgs-fmt
+
+    nix-melt
+    attic-client
+    cachix
+    direnv
+
+    rustc
+    cargo
+    sccache
+
+    fnm
+    deno
+    bun
+
+    (python311.withPackages (ps: with ps; [pip]))
+    yt-dlp
+    xkcdpass
+    pipreqs
+
+    libffi
+    openssl
+
+    rust-analyzer
+    nodePackages.typescript-language-server
+    rustfmt
+    clippy
+    dprint
+
+    age
+    bat
+    btop
+    cloudflared
+    doggo
+    doppler
+    du-dust
+    fd
+    ffmpeg
+    flyctl
+    fzf
+    gh
+    gen-license
+    gum
+    hyperfine
+    jq
+    just
+    mkcert
+    nerdfix
+    pscale
+    railway
+    ripgrep
+    silicon
+    tealdeer
+    tokei
+    vhs
+    vivid
+    watchexec
+    xh
+    zoxide
+
+    typst
+
+    packwiz
+    catppuccin-catwalk
+
+    nyoom
+    spicetify-cli
+    exiftool
+  ];
+}