Add MCP Toplist rank badge

[chrstphe]

Hi! MCP Toplist tracks 81,686 MCP servers across the major
registries, and Flutter Inspector MCP Server is currently ranked #439.

This PR adds a small live badge to your README showing that rank — it updates
automatically as the leaderboard changes:

Totally fine to close if you'd rather not — and if you'd like your server's
data corrected or removed from the leaderboard, just say so here or open an
issue at the site. Thanks for building Flutter Inspector MCP Server!

Summary by CodeRabbit

• Documentation
  • Added an MCP Toplist badge and link near the top of the README.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 34c2c6eb-7832-48f7-9560-d84e99509558

📥 Commits

Reviewing files that changed from the base of the PR and between 6975f88 and d958bf4.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

README.md adds an MCP Toplist badge image and link near the top of the document.

Changes

README badge update

Layer / File(s)	Summary
Add MCP Toplist badge README.md	The README top section includes an MCP Toplist badge image linked to its destination.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• Arenukvern/mcp_flutter#2: Also adds an MCP-related badge or link near the top of README.md.

Suggested reviewers: arenukvern

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the change, but it does not follow the required template and omits Summary, Validation, Checklist, and Notes sections.	Reformat the PR body to match the template and fill in Summary, Validation, Contributor Checklist, and Notes, even if some items are N/A.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding an MCP Toplist rank badge.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[Arenukvern]

hi @chrstphe! wow, thank you very much for the PR, looks awesome, will merge it