✨feature: Add markets page

main-menu.php

@@ -1,6 +1,8 @@
 <div class="mb-6">
     <a href="index.php" class="text-blue-400 hover:underline">Dashboard</a>
     <span class="mx-2">|</span>
+    <a href="market.php" class="text-blue-400 hover:underline">Markets</a>
+    <span class="mx-2">|</span>
     <a href="buy-ships.php" class="text-blue-400 hover:underline">Buy Ships</a>
     <span class="mx-2">|</span>
     <a href="mining-fleet.php" class="text-blue-400 hover:underline">Mining Fleet</a>