Implement PSR3 and PHP Monolog (#19)

* feat: install monolog composer lib
* feat: implement psr3 and monolog
* feat: display logs in frontend
* fix: tests
* build: update cicd to run tests for PR
* build: add phpcs to cicd
* refactor: fix phpcs problems

frontend/admin/src/App.vue

@@ -29,6 +29,10 @@
       <li :class="{active: route.name === 'mainpage'}">
         <RouterLink :to="{name: 'mainpage'}">Главная страница</RouterLink>
       </li>
+
+      <li :class="{active: route.name === 'logs'}">
+        <RouterLink :to="{name: 'logs'}">Журнал событий</RouterLink>
+      </li>
     </ul>
 
     <section class="form-horizontal tab-content">