MAPG-115 add new classes to store request data (get, post, session, etc.)

src/Request/Session.php

@@ -0,0 +1,37 @@
+<?php namespace MapGuesser\Request;
+
+use MapGuesser\Interfaces\Request\ISession;
+
+class Session implements ISession
+{
+    private array $data;
+
+    public function __construct(array &$data)
+    {
+        $this->data = &$data;
+    }
+
+    public function has($key): bool
+    {
+        return isset($this->data[$key]);
+    }
+
+    public function get($key)
+    {
+        if (isset($this->data[$key])) {
+            return $this->data[$key];
+        }
+
+        return null;
+    }
+
+    public function set($key, $value): void
+    {
+        $this->data[$key] = $value;
+    }
+
+    public function delete($key): void
+    {
+        unset($this->data[$key]);
+    }
+}