dsh-london-city: A DSH Plugin for Retrieving London City Information

The `dsh-london-city` plugin in the DeepSeek Harness ecosystem is used to retrieve information about London City. It is maintained by uckkk, and its version is 0.1.0. Before installation, the version requirements for `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools` must be met. The plugin is licensed under the MIT License and registers the `city_info` tool, whose function is to return undefined information for London City. It is implemented in pure Node.js and does not rely on network requests. After installation, it can be invoked directly within a DSH session. It is recommended to check the source code and license before installing third-party plugins.