Revert "change: 调整工程结构."

This reverts commit f6a3b336de.

src/test/java/com/serliunx/statemanagement/support/PrinterEvent.java

@@ -0,0 +1,12 @@
+package com.serliunx.statemanagement.support;
+
+/**
+ * @author <a href="mailto:serliunx@yeah.net">SerLiunx</a>
+ * @since 2025/1/24
+ */
+public enum PrinterEvent {
+
+    TURN_ON,
+
+    TURN_OFF,
+}

src/test/java/com/serliunx/statemanagement/support/PrinterState.java

@@ -0,0 +1,14 @@
+package com.serliunx.statemanagement.support;
+
+/**
+ * @author <a href="mailto:serliunx@yeah.net">SerLiunx</a>
+ * @version 1.0.0
+ * @since 2024/12/28
+ */
+public enum PrinterState {
+	IDLE,
+	SCANNING,
+	PRINTING,
+	STOPPING,
+	STOPPED
+}