[Feature] add workflow for auto author assign

[praptisharma28]

Describe the feature you'd like to request

Description:
This pull request addresses the need for a streamlined process by introducing an automated workflow to assign the pull request author as the assignee. This enhancement ensures that the person initiating the changes is automatically assigned, simplifying the assignment process.

Files added

.github/workflows/auto-author-assign.yml
Proposed Changes:
Introduce a GitHub Action that automatically assigns the pull request author as an assignee when a new pull request is created.

Describe the solution you'd like

Expected Behavior:
Upon creating a pull request, the GitHub Action will automatically assign the pull request author, enhancing the efficiency of the assignment process.

Describe alternatives you've considered

No response

Additional context

No response

[praptisharma28]

Assign me @LegendSumeet under iwoc