docs: Add one-click "Add to Kiro" install badge

[AnilMaktala]

Adds one-click install for Kiro, an AI-powered IDE.

When clicked, Kiro auto-configures this MCP server — no manual JSON editing needed.

• Added Kiro to the Integration Guides list
• Added a "Kiro Setup" section with one-click badge and manual JSON config
• Config file paths included for both global (~/.kiro/settings/mcp.json) and project-scoped (.kiro/settings/mcp.json)
• Links to Kiro MCP documentation

Only the README is modified — no other content changed.

[mattpodwysocki]

Thanks @AnilMaktala — appreciate the contribution. We're going to keep the README's Integration Guides list client-agnostic rather than maintain per-IDE one-click badges. The MCP protocol means this server already works in any MCP-compatible client (including Kiro) via the standard mcpServers config you already pasted in the PR.

The right place for a Kiro-specific add-button is probably Kiro's own MCP catalog/marketplace pointing back at this repo — that way the install URL lives with the tool that maintains it.

Closing this out, but appreciate you flagging Kiro support.