refactor: include Vegvisir source files from Reflect as a function (#3)

I know we just merged #2 and released verison 1.1.0 where the Vegvisir/Reflect crosstalk was supposed to be a class. But after using this briefly, I feel like it gets too verbose. This function will be called _a lot_ and therefore I think it should be pretty quick to type - just like the Vegvisir `VV` class.

Instead of typing
```php
use vlw\Scaffold\Scaffold;

Scaffold::include("some/file.php");
```
we can instead type
```php
use function vlw\Scaffold\load;

load("some/file.php");
```

Reviewed-on: https://codeberg.org/vlw/scaffold/pulls/3

src/Scaffold.php

@@ -5,25 +5,17 @@
 	use VV;
 	use Reflect\Path;
 
-	class Scaffold {
+	/**
-		/**
+	 * Include a source file from either Vegvisir or Reflect
-		 * Include a source file
+	 *
-		 * 
+	 * @param string $pathname Relative path from project root to a source file
-		 * @param string $pathname Relative path from project root to a source file
+	 */
-		 */
+	function load(string $pathname): void {
-		public static function include(string $pathname): void {
+		// Load the Vegvisir VV clas from Reflect
-			if (!class_exists("VV")) {
+		if (!class_exists("VV")) {
-				self::load_vegvisir_kernel();
-			}
-
-			require_once VV::root($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");
 		}
+
+		require_once VV::root($pathname);
 	}