Implement denylists

src/server/config.rs

@@ -78,9 +78,15 @@ impl MysqlConfig {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+pub struct AuthorizationConfig {
+    pub group_denylist_file: Option<PathBuf>,
+}
+
 #[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub struct ServerConfig {
     pub socket_path: Option<PathBuf>,
+    pub authorization: AuthorizationConfig,
     pub mysql: MysqlConfig,
 }