Introduce "use expression body" inspection #KT-16063 Fixed

Converted from the relevant intention
Reported cases: one-liners, whens
Also, more exact caret detection in local inspection tests

idea/testData/inspectionsLocal/collections/simplifiableCallChain/filterIsEmpty.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf(1, 2, 3).filter <caret>{ it % 2 != 0 }.isEmpty()
+val x = listOf(1, 2, 3).filte<caret>r { it % 2 != 0 }.isEmpty()

idea/testData/inspectionsLocal/collections/simplifiableCallChain/filterIsNotEmpty.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf(1, 2, 3).filter <caret>{ it % 2 != 0 }.isNotEmpty()
+val x = listOf(1, 2, 3).filte<caret>r { it % 2 != 0 }.isNotEmpty()

idea/testData/inspectionsLocal/collections/simplifiableCallChain/filterLastExplicit.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf("1", "").filter <caret>{ element -> element.isNotEmpty() }.last()
+val x = listOf("1", "").filte<caret>r { element -> element.isNotEmpty() }.last()

idea/testData/inspectionsLocal/collections/simplifiableCallChain/filterTextSingleOrNull.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = "5abc".filter { it.isDigit() }.<caret>singleOrNull()
+val x = "5abc".<caret>filter { it.isDigit() }.singleOrNull()

idea/testData/inspectionsLocal/collections/simplifiableCallChain/joinTo.kt

@@ -1,4 +1,4 @@
 // WITH_RUNTIME
 
 val sb = StringBuilder()
-val x = listOf(1, 2, 3).map { "$it*$it" }.<caret>joinTo(buffer = sb, prefix = "= ", separator = " + ")
+val x = listOf(1, 2, 3).<caret>map { "$it*$it" }.joinTo(buffer = sb, prefix = "= ", separator = " + ")

idea/testData/inspectionsLocal/collections/simplifiableCallChain/joinToString.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf(1, 2, 3).map { "$it*$it" }.<caret>joinToString(prefix = "= ", separator = " + ")
+val x = listOf(1, 2, 3).<caret>map { "$it*$it" }.joinToString(prefix = "= ", separator = " + ")

idea/testData/inspectionsLocal/collections/simplifiableCallChain/joinToStringWithReference.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf(1, 2, 3).map(Int::toString).<caret>joinToString(prefix = "= ", separator = " + ")
+val x = listOf(1, 2, 3).<caret>map(Int::toString).joinToString(prefix = "= ", separator = " + ")

idea/testData/inspectionsLocal/collections/simplifiableCallChain/mapNotNull.kt

@@ -1,3 +1,3 @@
 // WITH_RUNTIME
 
-val x = listOf(1, 0, 2).map { if (it != 0) it else null }.<caret>filterNotNull()
+val x = listOf(1, 0, 2).<caret>map { if (it != 0) it else null }.filterNotNull()