Add Object Explorer documentation

[AAdIprog]

📌 Fixes

Resolves documentation gap for the new Object Explorer feature.

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📝 Summary of Changes

Added comprehensive documentation for the Object Explorer UI feature. This includes a detailed guide on features, filtering, and usage, along with screenshots and navigation updates.

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Changes Made

• Added docs/content/ui-docs/ObjectExplorer.md covering:
  • Feature overview (Universal browser, filtering, resources)
  • View modes (Grid, List, Table)
  • Step-by-step guides and Use cases
  • API Reference and Troubleshooting
• Added supporting screenshots to docs/content/ui-docs/images/.
• Updated mkdocs.yml to include Object Explorer in the "User Guide > UI" navigation menu.

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Checklist

Please ensure the following before submitting your PR:

• I have reviewed the project's contribution guidelines.
• I have written unit tests for the changes (if applicable).
• I have updated the documentation (if applicable).
• I have tested the changes locally and ensured they work as expected.
• My code follows the project's coding standards.

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Screenshots or Logs (if applicable)

Screenshots representing the Filters, Grid View, List View, Resource Panel, and Multi-Kind Selection have been embedded directly into the new documentation file.

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👀 Reviewer Notes

The Mermaid diagrams in the documentation have been configured as code blocks for better rendering compatibility.

[kubestellar-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[kubestellar-prow]

Hi @AAdIprog. Thanks for your PR.

I'm waiting for a kubestellar member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[clubanderson]

❌ PR Title Verification Failed

Your PR title does not follow the required format.

Current title: Add Object Explorer documentation

Required Format

PR titles must start with one of these emoji prefixes:

Emoji	Meaning
⚠️	Breaking change
✨	Non-breaking feature
🐛	Patch fix / Bug fix
📖	Documentation
🚀	Release
🌱	Infra/Tests/Other

How to Fix

Edit your PR title to start with the appropriate emoji. For example:

• ✨ Add new feature for user authentication
• 🐛 Fix crash when loading empty config
• 📖 Update installation guide

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[clubanderson]

📖 Preview Links

The following documentation pages were changed in this PR:

Status	Page	Preview Link
📄	ObjectExplorer	View preview

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🔗 Full preview site