Add auto label action

[mawad-amd]

Motivation

Add auto label action:

• labels anything with iris so it gets auto added to the GH project
• label issues with appropriate labels

Technical Details

Test Plan

Test Result

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[Copilot]

Pull Request Overview

This PR adds GitHub workflow automation for labeling issues and pull requests. The automation ensures all issues/PRs get labeled with "iris" for automatic project board integration and applies appropriate labels based on issue content.

• Creates an auto-labeling workflow that triggers on new issues and pull requests
• Adds automatic project assignment for issues to ROCm Project #91
• Implements label-based automation for PR workflow management

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/auto-label.yml	Main workflow file defining three jobs for issue labeling, project assignment, and PR labeling
.github/workflows/auto-label.json5	Configuration file for the auto-label action with label synonyms and default settings

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