feat(gcloud-mcp): add get_gcloud_context tool #323
Description
Feature: Add get_gcloud_context tool
Problem
AI agents frequently need to know the current GCP context (active account, project, region, zone) before executing commands. Currently they must run multiple gcloud config get-value commands sequentially.
Solution
Add a get_gcloud_context tool that returns all context values in a single call by running the config queries in parallel.
Use Cases
- Verify which project/account will be used before executing commands
- Check environment at session start
- Debug configuration issues
Implementation
- Returns: account, project, region, zone, configuration name
- Executes 5 gcloud config queries in parallel for performance
- Handles unset values gracefully with helpful notes
Related to #168 (provide gcloud context)