Dark mode should be supported everywhere in the OCI console

Title: Universal Dark Mode Support in OCI Console

Description:
Dark mode should be supported everywhere in the Oracle Cloud Infrastructure (OCI) console.
This includes the dashboard, resource pages, monitoring tools, billing interface, and developer tools.

Why This Matters:

• 🧠 Focus & Clarity: Improves readability and concentration for developers and operators.
• 🎨 Consistency: Aligns OCI with modern UI standards adopted by AWS, Azure, GCP, and most IDEs.
• 🛠️ Accessibility: Supports users with light sensitivity and improves usability for diverse audiences.

Suggested Implementation:

• Add a toggle in the user settings for Light/Dark/Auto mode.
• Ensure full coverage across all OCI services and pages.
• Respect system-level dark mode preferences for seamless experience.