feat: Implement Resources class for managing exter

src/Snps/Resources.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Dna\Snps;
+
+use GuzzleHttp\Client;
+
+class Resources
+{
+    private string $baseUrl;
+    private string $localResourceDir;
+    private Client $httpClient;
+
+    public function __construct(string $baseUrl, string $localResourceDir)
+    {
+        $this->baseUrl = $baseUrl;
+        $this->localResourceDir = $localResourceDir;
+        $this->httpClient = new Client();
+    }
+
+    public function downloadResource(string $url, string $destinationPath): void
+    {
+        $response = $this->httpClient->get($url);
+        file_put_contents($destinationPath, $response->getBody());
+    }
+
+    public function loadDataFromFile(string $filePath)
+    {
+        return file_get_contents($filePath);
+    }
+
+    public function getReferenceSequence(string $id): ReferenceSequence
+    {
+        $filePath = $this->getLocalPathForResource($id);
+        $sequenceData = $this->loadDataFromFile($filePath);
+        return new ReferenceSequence($id, $sequenceData);
+    }
+
+    public function getAssemblyMappingData(string $id)
+    {
+        // Implementation for fetching assembly mapping data
+    }
+
+    public function getExampleDataset(string $id)
+    {
+        // Implementation for fetching example datasets
+    }
+
+    private function getLocalPathForResource(string $resourceId): string
+    {
+        return $this->localResourceDir . DIRECTORY_SEPARATOR . $resourceId;
+    }
+}