docs: add "Sending Cookies"

Author: kenjis

user_guide_src/source/libraries/cookies.rst

@@ -131,6 +131,21 @@ also take advantage of the class's constants to make it not a hassle.
 
 .. literalinclude:: cookies/006.php
 
+***************
+Sending Cookies
+***************
+
+Set the ``Cookie`` objects in the ``CookieStore`` of the Response object, and
+the framework will automatically send the cookies.
+
+Use :php:meth:`CodeIgniter\\HTTP\\Response::setCookie()` to set:
+
+.. literalinclude:: cookies/017.php
+
+You can also use the :php:func:`set_cookie()` helper function:
+
+.. literalinclude:: cookies/018.php
+
 **********************
 Using the Cookie Store
 **********************

user_guide_src/source/libraries/cookies/017.php

@@ -0,0 +1,17 @@
+<?php
+
+use CodeIgniter\Cookie\Cookie;
+use Config\Services;
+use DateTime;
+
+$response = Services::response();
+
+$cookie = new Cookie(
+    'remember_token',
+    'f699c7fd18a8e082d0228932f3acd40e1ef5ef92efcedda32842a211d62f0aa6',
+    [
+        'expires' => new DateTime('+2 hours'),
+    ]
+);
+
+$response->setCookie($cookie);

user_guide_src/source/libraries/cookies/018.php

@@ -0,0 +1,16 @@
+<?php
+
+use CodeIgniter\Cookie\Cookie;
+use DateTime;
+
+helper('cookie');
+
+$cookie = new Cookie(
+    'remember_token',
+    'f699c7fd18a8e082d0228932f3acd40e1ef5ef92efcedda32842a211d62f0aa6',
+    [
+        'expires' => new DateTime('+2 hours'),
+    ]
+);
+
+set_cookie($cookie);