Only ask user if they want to create a config.nu and env.nu one time #13669
Description
Related problem
When starting Nushell without a config.nu or env.nu, Nushell asks the user if they want to create one each time.
Describe the solution you'd like
If the $nu.default-config-dir directory exists, then assume the user has already run Nushell once, said "No" to the prompt, and not prompt again.
Describe alternatives you've considered
No response
Additional context and details
No response