Copy local-only files

[zaknafeyn]

When creating a new worktree, optionally copy:

.env
.env.local
.vscode/settings.json
.vscode/launch.json
local config files

But show a confirmation because .env may contain secrets.

Possible setting:

{
  "gitSmartCheckout.worktree.copyFiles": [
    ".env.local",
    ".vscode/launch.json"
  ]
}