Add an intention to simplify negated binary expressions

Given an expression of the form `!(a op b)`, replace it with `a !op b`.

For example:

    !(a < b)    -> a >= b
    !(a is Int) -> a !is int

idea/testData/intentions/simplifyNegatedBinaryExpressionIntention/notIs.kt

@@ -0,0 +1,4 @@
+// INTENTION_TEXT: Simplify negated '!is' expression to 'is'
+fun test(n: Int) {
+    !(0<caret> !is Int)
+}