feat(fs): add sys_dup3 (#755)

* feat(fs): add sys_dup3

user/apps/test_dup3/.gitignore

@@ -0,0 +1 @@
+test_dup3

user/apps/test_dup3/Makefile

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+ifeq ($(ARCH), x86_64)
+	CROSS_COMPILE=x86_64-linux-musl-
+else ifeq ($(ARCH), riscv64)
+	CROSS_COMPILE=riscv64-linux-musl-
+endif
+
+CC=$(CROSS_COMPILE)gcc
+
+.PHONY: all
+all: main.c
+	$(CC) -static -o test_dup3 main.c
+
+.PHONY: install clean
+install: all
+	mv test_dup3 $(DADK_CURRENT_BUILD_DIR)/test_dup3
+
+clean:
+	rm test_dup3 *.o
+
+fmt:

user/apps/test_dup3/main.c

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+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main() {
+    int fd = open("/history_commands.txt", O_RDONLY);
+    if (fd < 0) {
+        perror("Failed to open file");
+        return 1;
+    }
+
+    int new_fd = 777;
+    int rt = dup3(fd, new_fd, O_CLOEXEC);
+    if (rt < 0) {
+        perror("Failed to duplicate file descriptor with flags");
+    }
+
+    char buffer[100];
+    int bytes_read = read(new_fd, buffer, sizeof(buffer));
+    if (bytes_read < 0) {
+        perror("Failed to read data");
+        return 1;
+    }
+
+    printf("Data:\n %.*s\n", bytes_read, buffer);
+
+    close(fd);
+    close(new_fd);
+    return 0;
+}