KT-4568: Created the ConvertNegatedExpressionWithDemorgansLaw intention. Converts an expression of the form !(a &&,|| b) to its expanded equivalent under DeMorgan's law.

idea/testData/intentions/convertNegatedExpressionWithDemorgansLaw/inapplicableNormalExpression.kt

@@ -0,0 +1,4 @@
+// IS_APPLICABLE: false
+fun foo(a: Boolean, b: Boolean) : Boolean {
+    return <caret>a && b
+}