Created JWTService and related classes

module/Core/config/app_options.config.php

@@ -0,0 +1,6 @@
+<?php
+return [
+
+    'app_options' => [],
+
+];

module/Core/config/dependencies.config.php

@@ -1,12 +1,15 @@
 <?php
 use Acelaya\ZsmAnnotatedServices\Factory\V3\AnnotatedFactory;
 use Shlinkio\Shlink\Core\Action\RedirectAction;
+use Shlinkio\Shlink\Core\Options\AppOptions;
 use Shlinkio\Shlink\Core\Service;
 
 return [
 
     'dependencies' => [
         'factories' => [
+            AppOptions::class => AnnotatedFactory::class,
+
             // Services
             Service\UrlShortener::class => AnnotatedFactory::class,
             Service\VisitsTracker::class => AnnotatedFactory::class,

module/Core/src/Options/AppOptions.php

@@ -0,0 +1,97 @@
+<?php
+namespace Shlinkio\Shlink\Core\Options;
+
+use Acelaya\ZsmAnnotatedServices\Annotation\Inject;
+use Shlinkio\Shlink\Common\Util\StringUtilsTrait;
+use Zend\Stdlib\AbstractOptions;
+
+class AppOptions extends AbstractOptions
+{
+    use StringUtilsTrait;
+
+    /**
+     * @var string
+     */
+    protected $name = '';
+    /**
+     * @var string
+     */
+    protected $version = '1.0';
+    /**
+     * @var string
+     */
+    protected $secretKey = '';
+
+    /**
+     * AppOptions constructor.
+     * @param array|null|\Traversable $options
+     *
+     * @Inject({"config.app_options"})
+     */
+    public function __construct($options = null)
+    {
+        parent::__construct($options);
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string $name
+     * @return $this
+     */
+    protected function setName($name)
+    {
+        $this->name = $name;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * @param string $version
+     * @return $this
+     */
+    protected function setVersion($version)
+    {
+        $this->version = $version;
+        return $this;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getSecretKey()
+    {
+        return $this->secretKey;
+    }
+
+    /**
+     * @param mixed $secretKey
+     * @return $this
+     */
+    protected function setSecretKey($secretKey)
+    {
+        $this->secretKey = $secretKey;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return sprintf('%s:v%s', $this->name, $this->version);
+    }
+}