[light classes] move KtLightPackage to light-classes-base module

^KT-53097

compiler/light-classes/src/org/jetbrains/kotlin/asJava/finder/KtLightPackage.java

@@ -1,48 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.asJava.finder;
-
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiManager;
-import com.intellij.psi.impl.file.PsiPackageImpl;
-import com.intellij.psi.search.GlobalSearchScope;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.kotlin.asJava.KotlinAsJavaSupport;
-import org.jetbrains.kotlin.name.FqName;
-
-public class KtLightPackage extends PsiPackageImpl {
-
-    private final FqName fqName;
-    private final GlobalSearchScope scope;
-
-    public KtLightPackage(PsiManager manager, FqName qualifiedName, GlobalSearchScope scope) {
-        super(manager, qualifiedName.asString());
-        this.fqName = qualifiedName;
-        this.scope = scope;
-    }
-
-    @NotNull
-    @Override
-    public PsiElement copy() {
-        return new KtLightPackage(getManager(), fqName, scope);
-    }
-
-    @Override
-    public boolean isValid() {
-        return KotlinAsJavaSupport.getInstance(getProject()).packageExists(fqName, scope);
-    }
-}