Refactor and improve code obtaining actual Java annotation parameter values

Extract Java-specific code into module 'frontend.java' and use already
existing JavaAnnotationArgument facilities to determine the default
parameter value in an actual Java annotation class.

Annotation arguments are not yet supported because to create an instance
of AnnotationValue, we need a descriptor, which is not available at this
point.

 #KT-22704 In Progress
 #KT-28077 Open

idea/src/org/jetbrains/kotlin/idea/highlighter/PlatformExpectedAnnotator.kt

@@ -35,6 +35,7 @@ import org.jetbrains.kotlin.resolve.BindingTraceContext
 import org.jetbrains.kotlin.resolve.TargetPlatform
 import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker
 import org.jetbrains.kotlin.resolve.diagnostics.SimpleDiagnostics
+import org.jetbrains.kotlin.resolve.jvm.multiplatform.JavaActualAnnotationArgumentExtractor
 
 class PlatformExpectedAnnotator : Annotator {
     override fun annotate(element: PsiElement, holder: AnnotationHolder) {
@@ -49,12 +50,12 @@ class PlatformExpectedAnnotator : Annotator {
         val descriptor = declaration.toDescriptor() as? MemberDescriptor ?: return
         if (!descriptor.isExpect) return
 
+        // TODO: obtain the list of annotation argument extractors from platform somehow
+        val checker = ExpectedActualDeclarationChecker(listOf(JavaActualAnnotationArgumentExtractor()))
+
         val trace = BindingTraceContext()
         for (module in implementingModules) {
-            ExpectedActualDeclarationChecker.checkExpectedDeclarationHasActual(
-                declaration, descriptor, trace, module,
-                ExpectActualTracker.DoNothing
-            )
+            checker.checkExpectedDeclarationHasActual(declaration, descriptor, trace, module, ExpectActualTracker.DoNothing)
         }
 
         val suppressionCache = KotlinCacheService.getInstance(declaration.project).getSuppressionCache()

idea/src/org/jetbrains/kotlin/idea/inspections/OptionalExpectationInspection.kt

@@ -21,7 +21,7 @@ import org.jetbrains.kotlin.psi.classOrObjectVisitor
 import org.jetbrains.kotlin.psi.psiUtil.hasExpectModifier
 import org.jetbrains.kotlin.resolve.MultiTargetPlatform
 import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker
-import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker.allStrongIncompatibilities
+import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker.Companion.allStrongIncompatibilities
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.getMultiTargetPlatform
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver