feat: added vscode config

hm-imports/vscode/default.nix

@@ -0,0 +1,17 @@
+{ pkgs, config, lib, ... }:
+let
+  cfg = config.ragon.vscode;
+in
+{
+  options.ragon.vscode.enable = lib.mkOption { default = false; };
+  config = lib.mkIf cfg.enable {
+    programs.vscode = {
+      enable = true;
+      extensions = with pkgs.vscode-extensions; [
+        vscodevim.vim # vim mode (hopefully good)
+        yzhang.markdown-all-in-one # markdown
+        jdinhlife.gruvbox # theme
+      ];
+    };
+  };
+}