dsh-geography-mountains: World Mountain Peak Data Query Plugin

The `dsh-geography-mountains` plugin for DSH is designed to address data query latency and cost issues in agent development. It encapsulates world peak data and supports local queries without requiring internet access. It provides the `list_mountain` and `get_mountain` tools for quickly listing mountains or retrieving detailed information. Developers can install it via the command line, making it suitable for agent scenarios that require geographical knowledge.