Major Refactor: Modular Radar, Map Backgrounds, and UI Requests

Bug Fixes

• Radar Center Stability (#16)
  • Fixed: Radar now remains centered.

Features & Improvements

• Map Backgrounds & Overlay Support (#15)
  • New: Support for background_map: dark, bw, color, outlines, system.
• Flight List Visibility Options (#1)
  • New: list.hide to show or hide the flight info list—even if the radar is shown.
• Displayed/Filtered Flights Count (#12)
  • The card now shows a header with filtered and total flight counts, so you always know if filters are hiding flights.

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✅ Issues Closed/Addressed

• #16 Center of radar now stable
• #15 Radar card map backgrounds and overlays
• #12 Show filtered/total flights count
• #1 Hide the flight info list via config

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Full Changelog: v0.0.11...v0.1.0