Allow partial restores (library/settings)

Closes #3136

core/src/main/java/tachiyomi/core/util/lang/BooleanArrayExtensions.kt

@@ -0,0 +1,20 @@
+package tachiyomi.core.util.lang
+
+import kotlin.reflect.KProperty1
+import kotlin.reflect.full.declaredMemberProperties
+import kotlin.reflect.full.primaryConstructor
+
+fun <T : Any> T.asBooleanArray(): BooleanArray {
+    val constructorParams = this::class.primaryConstructor!!.parameters.map { it.name }
+    val properties = this::class.declaredMemberProperties
+        .filterIsInstance<KProperty1<T, Boolean>>()
+    return constructorParams
+        .map { param -> properties.find { it.name == param }!!.get(this) }
+        .toBooleanArray()
+}
+
+inline fun <reified T : Any> BooleanArray.asDataClass(): T {
+    val properties = T::class.declaredMemberProperties.filterIsInstance<KProperty1<T, Boolean>>()
+    require(properties.size == this.size) { "Boolean array size does not match data class property count" }
+    return T::class.primaryConstructor!!.call(*this.toTypedArray())
+}