Added FM Delivery Data API MCP Tool

[gsiddh]

Adding MCP tooling for FCM's Android Data Delivery API.

This will enable developers to play around with their FCM delivery data in their Agent of choice :)

[gemini-code-assist[bot]]

Summary of Changes

Hello @gsiddh, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new capability for developers to access and analyze their Firebase Cloud Messaging (FCM) delivery data directly through an MCP tool. By integrating with the FCM Data Delivery API, it provides granular insights into how messages and notifications are delivered to Android devices, covering various metrics like delivery success rates, delays, and reasons for message drops. This enhancement aims to empower developers with better visibility into their messaging performance.

Highlights

• New MCP Tool: A new Multi-Cloud Platform (MCP) tool, get_fcm_delivery_data, has been added to enable fetching Firebase Cloud Messaging (FCM) delivery data for Android applications.
• FCM Data API Integration: The pull request integrates with the FCM Data Delivery API (v1beta1) to retrieve detailed delivery metrics, including message outcomes, performance, and insights.
• Type Definitions: Comprehensive TypeScript interfaces have been introduced to strongly type the FCM delivery data structures, improving code clarity and maintainability.

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