Initial SQLite development (#1)

Reviewed-on: #1

src/Mapper/Mapper.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace BitBadger\PDODocument\Mapper;
+
+/**
+ * Map an associative array of results to a domain class
+ *
+ * @template T The type of document retrieved by this mapper
+ */
+interface Mapper
+{
+    /**
+     * Map a result to the specified type
+     *
+     * @param array $result An associative array representing a single database result
+     * @return T The item mapped from the given result
+     */
+    public function map(array $result): mixed;
+}