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/resolveAnnotations/parameters/long.kt

@@ -7,4 +7,4 @@ annotation class Ann(
 
 Ann(1, 1.toLong()) class MyClass
 
-// EXPECTED: Ann(b1 = IntegerValueType(1), b2 = 1.toLong())
+// EXPECTED: Ann(b1 = 1.toLong(), b2 = 1.toLong())