Added configurable auto-buy settings for ship purchasing. The new AutoBuy component in the ships view lets you set the credit threshold for automatic purchases, choose which ship type to buy, and toggle the feature on/off. Settings are persisted in the IAutomation data structure.

Restructured several components into folders for better organization. Ships now has its own folder with Ship, AutoBuy, and Automation components. Trades was similarly reorganized with a separate TradesDataTable component.

Extracted a reusable TabPanel component for tabbed interfaces. Fixed routing redirect issues and resolved GitHub issues #13 and #15 related to cargo display and ship information.