refactor(flake-parts): initial flake-parts configuration

inputs/home/modules/console/editor/nvim/keymapping.nix

@@ -0,0 +1,50 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.homeModules.console.editor.nvim;
+in
+
+{
+  config = lib.mkIf cfg.enable {
+    programs.nixvim = {
+      globals = {
+        mapleader = " ";
+        maplocalleader = " ";
+      };
+
+      keymaps = let
+        normal = 
+          lib.mapAttrsToList
+          (key: action: {
+            mode = "n";
+            inherit action key;
+          })
+          {
+            "<Space>" = "<NOP>";
+            "esc" = ":noh<CR>";
+            "Y" = "$y";
+          };
+          visual =
+            lib.mapAttrsToList
+            (key: action: {
+              mode = "v";
+              inherit action key;
+            })
+            {
+              # better indenting
+              ">" = ">gv";
+              "<" = "<gv";
+              "<TAB>" = ">gv";
+              "<S-TAB>" = "<gv";
+
+              # move selected line / block of text in visual mode
+              "K" = ":m '<-2<CR>gv=gv";
+              "J" = ":m '>+1<CR>gv=gv";
+            };
+      in
+      config.nixvim.helpers.keymaps.mkKeymaps
+      {options.silent = true;}
+      (normal ++ visual);
+    };
+  };
+}