Refactor and implement runtime session management

- Removed the UnitSelector class from UI and added a new UnitSelector class in Modules.
- Introduced RuntimeSessionCoordinator to manage runtime sessions, ensuring safe concurrent operations.
- Created ShigureRuntimeFactory to handle the creation of ShigureRuntime instances.
- Added WindowsTriggerKeyState and WindowsVirtualKeyMap for handling key states and virtual key mappings.
- Implemented IKeymapResolver interface for key mapping resolution.
- Established runtime dependencies with interfaces for screen scanning, state building, logic evaluation, and key output.

Input/KeymapService.cs

@@ -3,7 +3,7 @@ using System.Text.Json.Nodes;
 
 namespace Shigure;
 
-public sealed class KeymapService
+public sealed class KeymapService : IKeymapResolver
 {
     private readonly string _baseDirectory;
     private readonly ConfigService _config;