Effects: add test on (de)serialization of contracts

- Add ContractDescriptorRenderer
- Add option to dump function contracts in DescriptorRendererOptions
- Add parsing of LANGUAGE_VERSION directive in AbstractLoadJava
- Add tests on serialization-deserializaton identity of contracts

==========
Introduction of EffectSystem: 13/18

compiler/testData/loadJava/compiledKotlinWithStdlib/contracts/logicOperators.txt

@@ -0,0 +1,15 @@
+package test
+
+public fun andSequence(/*0*/ x: kotlin.Any?, /*1*/ y: kotlin.Any?, /*2*/ b: kotlin.Boolean): kotlin.Unit
+    Returns(WILDCARD) -> x is A && x is B && y is A && b
+
+public fun orSequence(/*0*/ x: kotlin.Any?, /*1*/ y: kotlin.Any?, /*2*/ b: kotlin.Boolean): kotlin.Unit
+    Returns(WILDCARD) -> x is String || y is Int || (!b)
+
+public final class A {
+    /*primary*/ public constructor A()
+}
+
+public final class B {
+    /*primary*/ public constructor B()
+}