refactor(core): enhance GameEngine and GUI for undo/redo functionality and integrate FEN/PGN export/import

modules/ui/build.gradle.kts

@@ -1,3 +1,6 @@
+import org.gradle.api.file.DuplicatesStrategy
+import org.gradle.jvm.tasks.Jar
+
 plugins {
     id("scala")
     id("org.scoverage")
@@ -38,6 +41,10 @@ tasks.named<JavaExec>("run") {
     standardInput = System.`in`
 }
 
+tasks.named<Jar>("jar") {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+}
+
 dependencies {
 
     implementation("org.scala-lang:scala3-compiler_3") {
@@ -54,6 +61,7 @@ dependencies {
     implementation(project(":modules:core"))
     implementation(project(":modules:rule"))
     implementation(project(":modules:api"))
+    implementation(project(":modules:io"))
 
     // ScalaFX dependencies
     implementation("org.scalafx:scalafx_3:${versions["SCALAFX"]!!}")