Refactor widgets

core/ktx/src/main/java/de/mm20/launcher2/ktx/UUID.kt

@@ -0,0 +1,12 @@
+package de.mm20.launcher2.ktx
+
+import java.nio.ByteBuffer
+import java.util.UUID
+
+fun UUID.toBytes(): ByteArray {
+    val bytes = ByteArray(16)
+    val buffer = ByteBuffer.wrap(bytes)
+    buffer.putLong(mostSignificantBits)
+    buffer.putLong(leastSignificantBits)
+    return buffer.array()
+}