Split CompileTimeConstant into two entities

1. ConstantValue
	* just holds some value and its type
	* implementations for concrete constants
2. CompileTimeConstant
	* is only produced by ConstantExpressionEvaluator
	* has additional flags (canBeUsedInAnnotation etc)
	* has two implementations TypedCompileTimeConstant containing a constant value
		and IntegerValueConstant which does not have exact type
	* can be converted to ConstantValue

Adjustt usages to use ConstantValue if flags are not needed
Add tests for some uncovered cases

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptAnnotationAndConstantLoader.kt

@@ -18,14 +18,14 @@ package org.jetbrains.kotlin.serialization.js
 
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
-import org.jetbrains.kotlin.resolve.constants.CompileTimeConstant
+import org.jetbrains.kotlin.resolve.constants.ConstantValue
 import org.jetbrains.kotlin.serialization.ProtoBuf
 import org.jetbrains.kotlin.serialization.deserialization.*
 import org.jetbrains.kotlin.types.JetType
 
 class KotlinJavascriptAnnotationAndConstantLoader(
         module: ModuleDescriptor
-) : AnnotationAndConstantLoader<AnnotationDescriptor, CompileTimeConstant<*>> {
+) : AnnotationAndConstantLoader<AnnotationDescriptor, ConstantValue<*>> {
     private val deserializer = AnnotationDeserializer(module)
 
     override fun loadClassAnnotations(
@@ -67,7 +67,7 @@ class KotlinJavascriptAnnotationAndConstantLoader(
             proto: ProtoBuf.Callable,
             nameResolver: NameResolver,
             expectedType: JetType
-    ): CompileTimeConstant<*>? {
+    ): ConstantValue<*>? {
         val value = proto.getExtension(JsProtoBuf.compileTimeValue)
         return deserializer.resolveValue(expectedType, value, nameResolver)
     }

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptSerializerExtension.kt

@@ -22,7 +22,6 @@ import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.resolve.constants.NullValue
-import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 import org.jetbrains.kotlin.serialization.AnnotationSerializer
 import org.jetbrains.kotlin.serialization.ProtoBuf
 import org.jetbrains.kotlin.serialization.SerializerExtension
@@ -48,10 +47,10 @@ public object KotlinJavascriptSerializerExtension : SerializerExtension() {
             proto.addExtension(JsProtoBuf.callableAnnotation, annotationSerializer.serializeAnnotation(annotation, stringTable))
         }
         val propertyDescriptor = callable as? PropertyDescriptor ?: return
-        val compileTimeConstant = propertyDescriptor.getCompileTimeInitializer()
-        if (compileTimeConstant != null && compileTimeConstant !is NullValue) {
-            val type = compileTimeConstant.type
-            proto.setExtension(JsProtoBuf.compileTimeValue, annotationSerializer.valueProto(compileTimeConstant, type, stringTable).build())
+        val constantInitializer = propertyDescriptor.getCompileTimeInitializer()
+        if (constantInitializer != null && constantInitializer !is NullValue) {
+            val type = constantInitializer.type
+            proto.setExtension(JsProtoBuf.compileTimeValue, annotationSerializer.valueProto(constantInitializer, type, stringTable).build())
         }
     }