Added basic Zathura configuration

modules/applications/default.nix

@@ -11,6 +11,7 @@
     ./media.nix
     ./nextcloud.nix
     ./spotify.nix
+    ./zathura.nix
     ./zeal.nix
 
     ./i3

modules/applications/zathura.nix

@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.this.application.zathura;
+  graphical = config.this.graphical;
+in with lib; {
+  options = {
+    this.application.zathura.enable = mkOption {
+      default = graphical.enable;
+      type = with types; bool;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home-manager.users.james = { programs.zathura = { enable = true; }; };
+  };
+}