Refactor MidiMessage type initialization and add TimedMidiMessage test

Updated `MidiMessage` to initialize with `MIDI_TIMED` type. Introduced `TimedMidiMessageTest` for testing serialization and validation logic. Updated `.gitignore` to include `.idea` directory.

.gitignore

@@ -45,3 +45,4 @@ bin/
 .kotlin
 kotlin-js-store
 gradle.properties
+.idea

src/commonMain/kotlin/nl/astraeus/midi/message/MidiMessage.kt

@@ -1,13 +1,6 @@
 package nl.astraeus.midi.message
 
-import nl.astraeus.tba.DataType
-import nl.astraeus.tba.MutableByteArrayHandler
-import nl.astraeus.tba.SlicedByteArray
-import nl.astraeus.tba.Type
-import nl.astraeus.tba.TypedByteArray
-import nl.astraeus.tba.blob
-import nl.astraeus.tba.double
-import nl.astraeus.tba.long
+import nl.astraeus.tba.*
 
 open class MidiMessage(
   vararg types: Type
@@ -54,7 +47,7 @@ class TimedMidiMessage() : MidiMessage(
   var readIndex: Int = 0
 
   init {
-    this.type = MidiMessageTypes.MIDI_DATA.typeId
+    this.type = MidiMessageTypes.MIDI_TIMED.typeId
   }
 
   constructor(data: ByteArray): this() {

src/commonTest/kotlin/nl/astraeus/midi/message/TimedMidiMessageTest.kt

@@ -0,0 +1,13 @@
+package nl.astraeus.midi.message
+
+import kotlin.test.Test
+
+class TimedMidiMessageTest {
+
+  @Test
+  fun testDefinitionSize() {
+    val message = TimedMidiMessage(0.0, 0, 0, 0)
+    val byteArray = message.data.buffer.toByteArray()
+    val message2 = TimedMidiMessage(byteArray)
+  }
+}