Gen 6 Saves + Visual Improvements

What's Changed

• Use Vite and better manage image resources by @andrewbenington in #13
• extend lines, add keys, fix action by @andrewbenington in #14
• styling and missing sprites by @andrewbenington in #15
• Gen 6 save support by @andrewbenington in #16

Full Changelog: v0.1.0...v0.2.0