feat: add dedicated class for crosstalk between Vegvisir and Reflect (#2)

In this PR we move the Vegvisir `VV` class import into Reflect from the API class into its own `Scaffold` class. This new class will include everything that is required for crosstalk between Vegvisir and Reflect.

Reviewed-on: https://codeberg.org/vlw/scaffold/pulls/2

src/API/API.php

@@ -7,12 +7,8 @@
 
 	namespace vlw\Scaffold\API;
 
-	use Reflect\Path;
 	use Reflect\Rules\Ruleset;
 
-	require_once Path::root("vegvisir/src/kernel/Init.php");
-	require_once Path::root("vegvisir/src/request/VV.php");
-
 	class API {
 		/**
 		 * Create a new API request with automatic request validation

src/Scaffold.php

@@ -0,0 +1,29 @@
+<?php
+
+	namespace vlw\Scaffold;
+
+	use VV;
+	use Reflect\Path;
+
+	class Scaffold {
+		/**
+		 * Include a source file
+		 * 
+		 * @param string $pathname Relative path from project root to a source file
+		 */
+		public static function include(string $pathname): void {
+			if (!class_exists("VV")) {
+				self::load_vegvisir_kernel();
+			}
+
+			require_once VV::root($pathname);
+		}
+
+		/**
+		 * Load the Vegvisir VV class from Reflect
+		 */
+		private static function load_vegvisir_kernel(): void {
+			require_once Path::root("vegvisir/src/kernel/Init.php");
+			require_once Path::root("vegvisir/src/request/VV.php");
+		}
+	}