fixup! Add Option for Simplified Layout

* merge structop and serde structs

example/default.yaml

@@ -1,5 +1,5 @@
 ---
-simplified_ui: false
+simplified_ui: true
 keybinds:
     unbind: true
     normal:

src/server/mod.rs

@@ -306,8 +306,8 @@ fn init_session(
             let send_pty_instructions = send_pty_instructions.clone();
             let send_server_instructions = send_server_instructions;
             let max_panes = opts.max_panes;
-            let capabilities = if let Some(ConfigCli::Options { simplified_ui }) = opts.option {
-                simplified_ui
+            let capabilities = if let Some(ConfigCli::Options(options)) = opts.option {
+                options.simplified_ui
             } else {
                 config_options.simplified_ui
             };