Deleted unused `KeyboardInputComponent`. Added file upload functionality to `MainView` with WebSocket event handling. Introduced `WebsocketClient` class for managing server connection and file transmission. Enhanced `KeyboardComponent` with configurable key rounding. Updated `WebsocketHandler` for improved binary message handling and storage.
Introduced adjustable `keyboardWidth` and `keyboardHeight` for `KeyboardComponent`, making dimensions dynamic. Added a knob component to control keyboard width in `MainView`. Enhanced layouts for flexibility and customization.
Adjusted the default value, minValue, and step for the volume knob to improve precision. Removed unused `KnobBackgroundCls` and cleaned up unnecessary whitespace for better readability and maintainability.
Added a Gradle build script for the test-app module with Kotlin Multiplatform configuration, including JS and JVM targets. Upgraded Kotlin plugin version to 2.1.10, updated dependencies, and adjusted the JS distribution path. Renamed the JS file in UndertowServer configuration for accuracy.
Introduced a new `test-app` module with a basic Kotlin/JS UI and a Kotlin/JVM backend. Updated dependencies to use `api` where applicable and made configuration changes to support composite builds.
