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/varnotnull/varCapturedInSafeClosure.kt

@@ -9,7 +9,7 @@ public fun foo() {
     }
     if (s != null) {
         System.out.println(closure())
-        // Smart cast is possible but closure makes it harder to understand
-        System.out.println(s<!UNSAFE_CALL!>.<!>length)
+        // Smart cast is possible, nobody modifies s
+        System.out.println(<!DEBUG_INFO_SMARTCAST!>s<!>.length)
     }
 }