Update to version 2.1.1-SNAPSHOT and improve KeyboardComponent note handling

Bumped project version to 2.1.1-SNAPSHOT in `build.gradle.kts`. Enhanced `KeyboardComponent` logic to visually indicate pressed keys with new CSS classes for both white and black keys. Added `requestUpdate` calls to ensure UI updates on note changes. Simplified JVM target configuration in build script.

build.gradle.kts

@@ -10,7 +10,7 @@ plugins {
 }
 
 group = "nl.astraeus"
-version = "2.1.0"
+version = "2.1.1-SNAPSHOT"
 
 repositories {
     mavenCentral()
@@ -37,9 +37,7 @@ kotlin {
             }
         }
     }
-    jvm {
+    jvm {}
-        withJava()
-    }
 
     sourceSets {
         val commonMain by getting {

src/jsMain/kotlin/nl/astraeus/vst/ui/components/KeyboardComponent.kt

@@ -78,11 +78,13 @@ class KeyboardComponent(
   fun noteDown(midiNote: Int) {
     pressedNotes.add(midiNote)
     onNoteDown(midiNote)
+    requestUpdate()
   }
 
   fun noteUp(midiNote: Int) {
     pressedNotes.remove(midiNote)
     onNoteUp(midiNote)
+    requestUpdate()
   }
 
   private fun releaseAllNotes() {
@@ -227,25 +229,29 @@ class KeyboardComponent(
 
           // Draw white keys
           for (i in 0 until 7) {
+            val midiNote = whiteKeys[i] + (octave - 5) * 12
+            val isPressed = pressedNotes.contains(midiNote)
             rect(
               i * whiteKeyWidth,
               0,
               whiteKeyWidth,
               keyboardHeight,
               0,
-              WhiteKeyCls.name
+              if (isPressed) WhiteKeyPressedCls.name else WhiteKeyCls.name
             )
           }
 
           // Draw black keys
           for (i in 0 until 5) {
+            val midiNote = blackKeys[i] + (octave - 5) * 12
+            val isPressed = pressedNotes.contains(midiNote)
             rect(
               blackKeyPositions[i],
               0,
               blackKeyWidth,
               blackKeyHeight,
               0,
-              BlackKeyCls.name
+              if (isPressed) BlackKeyPressedCls.name else BlackKeyCls.name
             )
           }
         }
@@ -263,6 +269,8 @@ class KeyboardComponent(
     object OctaveButtonCls : CssName()
     object WhiteKeyCls : CssName()
     object BlackKeyCls : CssName()
+    object WhiteKeyPressedCls : CssName()
+    object BlackKeyPressedCls : CssName()
 
     init {
       defineCss {
@@ -330,11 +338,23 @@ class KeyboardComponent(
           plain("stroke-width", "1")
         }
 
+        select(cls(WhiteKeyPressedCls)) {
+          plain("fill", "#E6E6E6")  // 10% darker than white
+          plain("stroke", "#000000")
+          plain("stroke-width", "1")
+        }
+
         select(cls(BlackKeyCls)) {
           plain("fill", "#000000")
           plain("stroke", "#000000")
           plain("stroke-width", "1")
         }
+
+        select(cls(BlackKeyPressedCls)) {
+          plain("fill", "#333333")  // 10% lighter than black
+          plain("stroke", "#000000")
+          plain("stroke-width", "1")
+        }
       }
     }
   }