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 MCP client documentation links list
• Added a "Using Kiro" subsection under "Set up as local MCP server", following the same pattern as the existing "Using Node.js" and "Using Docker" subsections
• Includes one-click badge plus manual JSON config
• Links to Kiro MCP documentation

Only the README is modified — no other content changed.

[google-cla]

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[gemini-code-assist]

Code Review

This pull request updates the README.md to include Kiro as a supported MCP client and provides a new section with its configuration details. A review comment suggests removing unnecessary indentation from the Kiro configuration code block to ensure consistent Markdown formatting and rendering.

[gemini-code-assist]

The code block for the Kiro configuration is indented by 3 spaces, which is inconsistent with other top-level code blocks in this document (such as the one at the beginning of the file). In Markdown, fenced code blocks should not be indented unless they are nested within a list item or another block element. Removing the leading spaces will ensure consistent formatting and correct rendering across different Markdown parsers.

Suggested change

	```json
	{
	"mcpServers": {
	"cloud-run": {
	"command": "npx",
	"args": ["-y", "@google-cloud/cloud-run-mcp"]
	}
	}
	}
	```
	{
	"mcpServers": {
	"cloud-run": {
	"command": "npx",
	"args": ["-y", "@google-cloud/cloud-run-mcp"]
	}
	}
	}

[shruti-mantri]

@AnilMaktala Can you please sign the Google CLA?