give user error or info message on console if models folder missing

[Bhanu-code]

What would you like to be added?

The project searches schema files inside models folder, if models folder is not found give user an info message that "models folder not found, create a models folder to visualize schemas"

Why is this needed?

for user convience

[github-actions]

Congratulations, @Bhanu-code! 🎉 Thank you for creating your issue. Your contribution is greatly appreciated and we look forward to working with you to resolve the issue. Keep up the great work!

We will promptly review your changes and offer feedback. Keep up the excellent work! Kindly remember to check our contributing guidelines

[zenoR-git]

Hello Bhanu, I would like to work on this issue. Could you assign it to me.