[Feature]: Include github action workflow for greeting contributors

[praptisharma28]

Description:
The current project lacks an automated action to greet contributors. GitHub Actions can significantly enhance project automation. I propose adding a GitHub Action workflow to greet new pull request (PR) and issue creators, fostering a welcoming environment.

Proposed Changes:
Implement a GitHub Action workflow that triggers on new PRs and issues. The workflow should include a greeting message to acknowledge and appreciate the contributors for their efforts.

[praptisharma28]

Please assign me this under iwoc24 and give the difficulty level tag @wootzappcom , will add in .github

[1311-hack1]

@pandey019 can be closed