feat: define devkit neovim as default editor

configuration.nix

@@ -1,9 +1,11 @@
 {
-  inputs,
   config,
+  inputs,
+  lib,
   pkgs,
   ...
-}: {
+}:
+with lib; {
   imports = [
     ./capytal
     ./abaduh
@@ -29,6 +31,7 @@
     packages = with pkgs;
       [
         libinput
+        inputs.dot013-nix.packages.${pkgs.system}.neovim
       ]
       ++ (with inputs.dot013-nix.packages.${pkgs.system}.devkit; [
         git
@@ -39,6 +42,10 @@
       ]);
   };
 
+  environment.sessionVariables = {
+    EDITOR = getExe inputs.dot013-nix.packages.${pkgs.system}.neovim;
+  };
+
   # GnuPG
   programs.gnupg.agent = {
     enable = true;