Introducing the DeepSeek Harness Client Connection Authorization Plugin

`sperictao/dsh-client-connection-authz` is an authentication plugin for DeepSeek Harness (DSH), designed to provide fine-grained authorization for external client connection requests. It intercepts connection requests by injecting `ConnectionRequestAuthorizer`, enforces access control policies, and preserves the original connection behavior. The plugin includes local bypass protection and browser security validation mechanisms, and must be used together with an authentication package that implements the authorization logic. This solution is suitable for scenarios that require strict restrictions on remote access permissions, and is compatible with DSH 0.1.0-rc.x and the dependency range `^0.1.6-alpha.1`.