Preliminary declaration visitor for estimating local variable's predictability for smart casts

Predictability estimation algorithm is completely new, but backward compatibility should present.
A large set of tests. Some updated tests.
Smart casts allowed for captured variables if they are not modified in closure #KT-9051 Fixed
Also #KT-8643 Fixed
Also #KT-7976 Fixed
Correct handling of lambda arguments in functions #KT-9143 Fixed

compiler/testData/diagnostics/tests/smartCasts/lambdaDeclaresAndModifiesInLoop.txt

@@ -0,0 +1,4 @@
+package
+
+public fun foo(/*0*/ arg: kotlin.Int?): kotlin.Unit
+public fun run(/*0*/ f: () -> kotlin.Unit): kotlin.Int