home-manager: move all config together, allow for multiple users

common/home-manager.nix

@@ -0,0 +1,18 @@
+{ config, lib, pkgs, ... }:
+
+{
+  home-manager = {
+    useUserPackages = true;
+    useGlobalPkgs = true;
+
+    users = {
+      qenya = { config, lib, pkgs, osConfig, ... }: {
+        home.homeDirectory = osConfig.users.users.qenya.home;
+
+        imports = [
+          ../home/qenya
+        ];
+      };
+    };
+  };
+}