[Don't merge] [PoC] [ITEP-86044] Extend Controller's Analytics Only mode

[dmytroye]

📝 Description

Extends the Controller “Analytics Only” mode to rely on scene/tracker messages for tracked objects while still subscribing to camera detection topics to enrich analytics with confidence, visibility, camera bounds, and per-camera rates.

Changes:

• Cache per-camera detections and FPS rates in Scene when running in Analytics Only mode.
• Use cached detections to backfill confidence, visibility, and camera bounds for tracked objects.
• Update Controller subscriptions to listen to both DATA_SCENE and DATA_CAMERA in Analytics Only mode.

✨ Type of Change

Select the type of change your PR introduces:

• 🐞 Bug fix – Non-breaking change which fixes an issue
• 🚀 New feature – Non-breaking change which adds functionality
• 🔨 Refactor – Non-breaking change which refactors the code base
• 💥 Breaking change – Changes that break existing functionality
• 📚 Documentation update
• 🔒 Security update
• 🧪 Tests
• 🚂 CI

🧪 Testing Scenarios

Describe how the changes were tested and how reviewers can test them too:

• ✅ Tested manually
• 🤖 Ran automated end-to-end tests

✅ Checklist

Before submitting the PR, ensure the following:

• 🔍 PR title is clear and descriptive
• 📝 For internal contributors: If applicable, include the JIRA ticket number (e.g., ITEP-123456) in the PR title. Do not include full URLs
• 💬 I have commented my code, especially in hard-to-understand areas
• 📄 I have made corresponding changes to the documentation
• ✅ I have added tests that prove my fix is effective or my feature works

[dmytroye]

Partly covered in #1010