wip: TSS added to the gdt and start to implement scheduler

headers/task.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "list.h"
+
+#include <stdint.h>
+
+enum status { ZOMBIE, THREAD, RUN };
+
+struct task {
+	uint32_t *esp;
+	uint32_t *esp0;
+	uint32_t *cr3;
+	uint16_t pid;
+	uint8_t status;
+	struct task *daddy;
+	struct task *child;
+	struct list **signals;
+	uint8_t owner_id;
+	struct task *next;
+};
+
+void scheduler(void);
+void switch_to_task(struct task *next_task);