[FEATURE] Automated Greeting Workflow

[sanmarg]

Description

I propose to create a GitHub workflow named "Greetings". This workflow will automatically greet users who create new issues or pull requests in this repository. The Greeting will look like "Hi there! Thanks for opening this issue. We appreciate your contribution to this open-source project. We aim to respond or assign your issue as soon as possible."

Please assign this issue to me.

Screenshots