Configuration Interface Overhaul

This release primarily focuses on resolving dropdown-related configuration saving issues caused by frontend changes in recent versions of Home Assistant.

What is Fixed

• Restored Dropdown Reliability: [#31] Replaced all deprecated ha-select inputs in the card editor with Home Assistant's modern ha-dropdown component. Selections for options like "Color Mode", "Line Length", and "Curve Type" will now reliably update your card's configuration upon click.
• Modernized Architecture: Transitioned away from legacy Material Web Components (mwc-list-item) in favor of the newer, officially recommended ha-dropdown-item and @wa-select event framework.