modularize colorscheming and more

configs/hledger.nix

@@ -0,0 +1,13 @@
+{ config, ... }:
+{
+  imports = [ <modules/hledger.nix> ];
+
+  niveum.hledger = {
+    enable = true;
+    server = {
+      enable = true;
+      user = config.users.users.me;
+      capabilities = [ "view" ];
+    };
+  };
+}