Upgrade project to PHP 8.3, add PHPStan, upgrade almost every dependency (#36)

* start updating to PHP 8.3

* taking off!

Co-authored-by: ErickSkrauch <erickskrauch@yandex.ru>
Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* dropped this

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* migrate to symfonymailer

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* this is so stupid 😭

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* ah, free, at last.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* oh, Gabriel.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* now dawns thy reckoning.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* and thy gore shall GLISTEN before the temples of man.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* creature of steel.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* my gratitude upon thee for my freedom.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* but the crimes thy kind has committed against humanity

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* Upgrade PHP-CS-Fixer and do fix the codebase

* First review round (maybe I have broken something)

* are NOT forgotten.

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

* Enable parallel PHP-CS-Fixer runner

* PHPStan level 1

* PHPStan level 2

* PHPStan level 3

* PHPStan level 4

* PHPStan level 5

* Levels 6 and 7 takes too much effort. Generate a baseline and fix them eventually

* Resolve TODO's related to the php-mock

* Drastically reduce baseline size with the Rector

* More code modernization with help of the Rector

* Update GitLab CI

---------

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>
Co-authored-by: ErickSkrauch <erickskrauch@yandex.ru>

common/tests/_support/queue/CodeceptionQueueHelper.php

@@ -4,15 +4,14 @@ namespace common\tests\_support\queue;
 use Codeception\Exception\ModuleException;
 use Codeception\Module;
 use Codeception\Module\Yii2;
+use yii\queue\JobInterface;
 
 class CodeceptionQueueHelper extends Module {
 
     /**
      * Returns last sent message
-     *
-     * @return \yii\queue\JobInterface|null
      */
-    public function grabLastQueuedJob() {
+    public function grabLastQueuedJob(): ?JobInterface {
         $messages = $this->grabQueueJobs();
         $last = end($messages);
         if ($last === false) {
@@ -27,11 +26,10 @@ class CodeceptionQueueHelper extends Module {
      * Each message is `\PhpAmqpLib\Message\AMQPMessage` instance.
      * Useful to perform additional checks using `Asserts` module.
      *
-     * @param string|null $exchange
      * @return \yii\queue\JobInterface[]
      * @throws ModuleException
      */
-    public function grabQueueJobs() {
+    public function grabQueueJobs(): array {
         $amqp = $this->grabComponent('queue');
         if (!$amqp instanceof Queue) {
             throw new ModuleException($this, 'AMQP module is not mocked, can\'t test messages');