scripts: add issue triager utility (summarizes & classifies open issues)

[Atubulated]

Adds a lightweight developer utility script under scripts/triager.py.

Features:

• Fetches open issues from the repository.
• Heuristically classifies issues as: bug / feature / docs / question / other.
• Summarizes issue body text (up to 200 characters).
• Remembers which issues have already been shown in .triager_seen.json to avoid duplicates.

Notes:

• Read-only: does not modify GitHub or any repo content.
• Dependency: requests library (pip install requests).
• Usage: python scripts/triager.py --repo sentient-agi/ROMA.
• Designed as a safe developer tool to help maintainers and contributors quickly triage open issues.

If preferred, this script can also be moved to a separate repository for external tooling. Your feedback is highly welcome.