添加 monocle 布局功能

src/layout.c

@@ -0,0 +1,19 @@
+#include "layout.h"
+
+#include <stdint.h>
+
+#include "client.h"
+#include "types.h"
+#include "utils.h"
+
+void monocle(tag_t *tag) {
+  logger("== monocle tag: %s start ==\n", tag->name);
+  for (task_in_tag_t *task = tag->task_list; task; task = task->next) {
+    if (!client_need_layout(task->client)) continue;
+    task->geometry = task->client->monitor->workarea;
+    logger("== window 0x%x: x: %d, y: %d, width: %u, height: %u\n",
+           task->client->window, task->geometry.x, task->geometry.y,
+           task->geometry.width, task->geometry.height);
+  }
+  logger("== monocle tag: %s end ==\n", tag->name);
+}