feat: Implement SSH master connector and CLI for certificate management

apps/nxmesh-agent/src/connector/master/mod.rs

@@ -0,0 +1,40 @@
+use std::sync::Arc;
+
+use tokio::sync::Mutex;
+
+pub mod ssh;
+
+pub type AgentClient = nxmesh_proto::agent_service_client::AgentServiceClient<tonic::transport::Channel>;
+
+#[async_trait::async_trait]
+pub trait MasterConnectorTrait: Send + Sync {
+    async fn connect(
+        &mut self,
+        settings: &crate::config::settings::Settings,
+    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>>;
+    fn get_client(&self) -> Arc<Mutex<AgentClient>>;
+}
+
+pub struct MasterConnector {
+    connector: Box<dyn MasterConnectorTrait>,
+}
+
+impl MasterConnector {
+    pub fn new(connector: Box<dyn MasterConnectorTrait>) -> Self {
+        Self { connector }
+    }
+}
+
+#[async_trait::async_trait]
+impl MasterConnectorTrait for MasterConnector {
+    async fn connect(
+        &mut self,
+        settings: &crate::config::settings::Settings,
+    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        self.connector.connect(settings).await
+    }
+
+    fn get_client(&self) -> Arc<Mutex<AgentClient>> {
+        self.connector.get_client()
+    }
+}