Add auto label action

[mawad-amd]

Motivation

Add auto label action:

1. Labels anything with iris so it gets auto added to the GH project
2. 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 automated labeling functionality for GitHub issues and pull requests. The automation applies the "iris" label to all items for project tracking and uses pattern matching to apply appropriate labels to issues based on their titles.

Key changes:

• Implements GitHub Actions workflow for automatic labeling on issue/PR creation
• Configures pattern-based labeling rules for issues using JSON5 configuration
• Ensures all PRs receive the "iris" label for project management integration

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 two jobs: issue labeling using third-party action and PR labeling using GitHub script
.github/workflows/auto-label.json5	Configuration file defining label synonyms and default labels for the auto-labeling action

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