AA: migrate PackagePartProviderFactory to general API providers

analysis/analysis-api-providers/src/org/jetbrains/kotlin/analysis/providers/PackagePartProviderFactory.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.analysis.providers
+
+import com.intellij.openapi.project.Project
+import com.intellij.psi.search.GlobalSearchScope
+import org.jetbrains.kotlin.load.kotlin.PackagePartProvider
+
+public abstract class PackagePartProviderFactory {
+    /**
+     * Create a [PackagePartProvider] for a given scope. [PackagePartProvider] is responsible for searching sub packages in a library.
+     */
+    public abstract fun createPackagePartProvider(scope: GlobalSearchScope): PackagePartProvider
+}
+
+/**
+ * Create a [PackagePartProvider] for a given scope. [PackagePartProvider] is responsible for searching sub packages in a library.
+ */
+public fun Project.createPackagePartProvider(scope: GlobalSearchScope): PackagePartProvider =
+    getService(PackagePartProviderFactory::class.java).createPackagePartProvider(scope)