refactor(kernel): unify HTTP and CLI application lifecycle

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

core/lib/index.php

@@ -1,11 +1,9 @@
 <?php
 
-use KTXC\Server;
+use KTXC\Application;
 
 // Capture Composer ClassLoader instance for compatibility
 $composerLoader = require_once __DIR__ . '/../vendor/autoload.php';
 
-$server = new Server(dirname(__DIR__));
-Server::setComposerLoader($composerLoader);
-
-$server->runHttp();
+$application = Application::create(dirname(__DIR__), $composerLoader);
+$application->runHttp();