flake: move home-manager module to flake-parts root

flake.nix

@@ -28,9 +28,7 @@
 
         homeManagerModules = {
           neovim-flake = {
-            imports = [
-              (import ./lib/module self.packages inputs)
-            ];
+            imports = [(import ./flake/modules/home-manager.nix self.packages inputs)];
           };
 
           default = self.homeManagerModules.neovim-flake;