feat: add node/fees endpoint (#42)

Author: dated

src/API/Node.php

@@ -49,4 +49,16 @@ public function configuration(): array
     {
         return $this->get('node/configuration');
     }
+
+    /**
+     * Get the node fee statistics.
+     *
+     * @param int|null $days
+     *
+     * @return array
+     */
+    public function fees(int $days = null): array
+    {
+        return $this->get('node/fees', ['query' => ['days' => $days]]);
+    }
 }

tests/API/NodeTest.php

@@ -46,4 +46,12 @@ public function configuration_calls_correct_url()
             return $connection->node()->configuration();
         });
     }
+
+    /** @test */
+    public function fees_calls_correct_url()
+    {
+        $this->assertResponse(2, 'GET', 'node/fees', function ($connection) {
+            return $connection->node()->fees();
+        });
+    }
 }