Whitelist Update

Added

Import & Export:
- Added buttons for importing and exporting whitelists using the Tournament Tool format.
- The import button includes a few exceptions—hover over the question mark icon for details.
Progress Window:
- Displays progress for actions like fixing player heads, importing, and loading JSON/CSV files.
Context Menu Enhancements:
- Right-clicking the whitelist background now provides quick access to "Add Player".
- Added "Fix Head" in the context menu for individual players.
Filtering Options:
- Players can now be filtered by Name, In-Game Name, Stream, and Team Name.
Team Name Support:
- New setting "Display Team Names" in presets to show team names above player names in the controller and whitelist.
- Added a team name field when adding or editing a player.
Selection Controls:
- Players can be unselected or multi-selected using Ctrl or Shift + left-click.
- Pressing Del deletes all selected players.

.NET Upgrade: Upgraded from .NET 8 to .NET 9. A popup will notify users to update.
Single Instance Restriction: You can no longer open multiple instances of Tournament Tool.

Layout Redesign: Improved UI with a dedicated Add/Edit Player window.
Unified File Loading:
- Merged JSON and CSV loading into a single button supporting all those file types.
- .ranked files now load as JSON, while .json is now the official Tournament Tool whitelist format.

Stream Category Visibility:
- Renamed "Show LIVE only for Minecraft category" to "Show Stream Category".
- Now toggles visibility of all stream categories.

Whitelist Scrollbar: Fixed an issue where the whitelist behaved strangely with the scrollbar in the controller.

Full Changelog: 0.10.1...0.11.0