refactor

- move elixForms API logic to specific folder
- move everything else under Api folder

src/Api/Core/Request.php

@@ -0,0 +1,26 @@
+<?php
+namespace Core;
+
+class Request {
+    public function method() {
+        return $_SERVER['REQUEST_METHOD'];
+    }
+
+    public function path() {
+        return strtok($_SERVER['REQUEST_URI'], '?');
+    }
+
+    public function body() {
+        return json_decode(file_get_contents('php://input'), true);
+    }
+
+    public function query() {
+        return $_GET;
+    }
+
+    public function header(string $name): ?string
+    {
+        $key = 'HTTP_' . strtoupper(str_replace('-', '_', $name));
+        return $_SERVER[$key] ?? null;
+    }
+}