Split domains into their own var file and update all files accordingly

variables/domains/default.nix

@@ -0,0 +1,14 @@
+{ lib, config, ... }:
+{
+  options.domains = lib.mkOption {
+    type = lib.types.attrs;
+    default = {};
+  };
+
+  config.domains = {
+    jim1 = "jimbosfiles.com";
+    jim2 = "nixfox.ca";
+    corn = "freecorn1854.win";
+    luna = "lunamoonlight.xyz";
+  };
+}