added layout preview for startingactivity

Generator/app/build.gradle.kts

@@ -41,6 +41,10 @@ android {
 }
 
 dependencies {
+    implementation(libs.appcompat)
+    implementation(libs.material)
+    implementation(libs.activity)
+    implementation(libs.constraintlayout)
     dependencies {
         coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.5")
         implementation("androidx.multidex:multidex:2.0.1")