点击切换 tag 功能做成 button 配置

src/action.c

@@ -0,0 +1,8 @@
+#include "action.h"
+
+#include "monitor.h"
+#include "wm.h"
+
+void select_tag_of_current_monitor(const user_action_arg_t *arg) {
+  monitor_select_tag(wm.current_monitor, arg->ui);
+}