docs: Update README with addlt. MCP server configurations

[aaronsteers]

Added configuration examples for complementary MCP servers and a timer tool.

[github-actions]

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Testing This Branch via MCP

To test the changes in this specific branch with an MCP client like Claude Desktop, use the following configuration:

{
  "mcpServers": {
    "connector-builder-mcp-dev": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/airbytehq/connector-builder-mcp.git@docs/add-complementary-agents", "connector-builder-mcp"]
    }
  }
}

Testing This Branch via CLI

You can test this version of the MCP Server using the following CLI snippet:

# Run the CLI from this branch:
uvx 'git+https://github.com/airbytehq/connector-builder-mcp.git@docs/add-complementary-agents#egg=airbyte-connector-builder-mcp' --help

PR Slash Commands

Airbyte Maintainers can execute the following slash commands on your PR:

• /autofix - Fixes most formatting and linting issues
• /poe <command> - Runs any poe command in the uv virtual environment
• /poe build-connector prompt="Star Wars API" - Run the connector builder using the Star Wars API.

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[Copilot]

Pull Request Overview

Updates the README.md with additional configuration examples for MCP servers to help users set up complementary tools alongside their existing MCP server setup.

• Added configuration examples for file system and web browser MCP servers
• Added timer tool configuration example for agent timing functionality

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[github-actions]

PyTest Results (Fast)

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit 157f1c4. ± Comparison against base commit 3d1e4c9.