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

compiler/testData/diagnostics/testsWithStdLib/annotations/annotationClassMethodCall.txt

@@ -14,7 +14,7 @@ public final class A : kotlin.Annotation {
     public abstract fun value(): kotlin.String
 }
 
-A(arg = IntegerValueType(1), value = "a") internal final class MyClass {
+A(arg = 1, value = "a") internal final class MyClass {
     public constructor MyClass()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int