Use TopLevelDeclarations analysis mode in REPL

#KT-12564 Fixed

compiler/testData/repl/controlFlow/functionWithoutReturn.repl

@@ -0,0 +1,4 @@
+>>> fun fn(): Int {}
+error: a 'return' expression required in a function with a block body ('{...}')
+fun fn(): Int {}
+               ^

compiler/testData/repl/controlFlow/incompleteIf.repl

@@ -0,0 +1,6 @@
+>>> if (false) 42
+>>> if (true) 42
+>>> "" + (if (true) 42)
+error: 'if' must have both main and 'else' branches if used as an expression
+"" + (if (true) 42)
+      ^

compiler/testData/repl/controlFlow/incompleteWhen.repl

@@ -0,0 +1,11 @@
+>>> val a = when(null) { }
+error: 'when' expression must be exhaustive, add necessary 'else' branch
+val a = when(null) { }
+        ^
+warning: the expression is unused
+val a = when(null) { }
+             ^
+>>> "" + when (true) { true -> 42 }
+error: 'when' expression must be exhaustive, add necessary 'false' branch or 'else' branch instead
+"" + when (true) { true -> 42 }
+     ^

compiler/testData/repl/controlFlow/loopWithWrongLabel.repl

@@ -0,0 +1,4 @@
+>>> for (n in 1..10) foo@ { break@foo }
+error: the label '@foo' does not denote a loop
+for (n in 1..10) foo@ { break@foo }
+                        ^

compiler/testData/repl/controlFlow/mutateVal.repl

@@ -0,0 +1,11 @@
+>>> val x = 1
+>>> x = 2
+error: val cannot be reassigned
+x = 2
+^
+>>> x++
+error: val cannot be reassigned
+x++
+^
+>>> x
+1

compiler/testData/repl/controlFlow/useUninitializedVal.repl

@@ -0,0 +1,12 @@
+>>> val a: String
+error: property must be initialized or be abstract
+val a: String
+^
+>>> a
+error: unresolved reference: a
+a
+^
+>>> val s: String = s
+error: variable 's' must be initialized
+val s: String = s
+                ^