Replace "flatMap -> flatten" inspection with abstract "simplifiable call"

Related to KT-30501

idea/testData/inspectionsLocal/collections/simplifiableCall/.inspection

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.inspections.collections.SimplifiableCallInspection

idea/testData/inspectionsLocal/collections/simplifiableCall/explicitLambdaParameter.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).<caret>flatMap { i -> i }
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/explicitLambdaParameter.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatten()
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/notOnlyReference.kt

@@ -0,0 +1,5 @@
+// PROBLEM: none
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatMap<caret> { it + 1 }
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/set.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    setOf(setOf(1)).<caret>flatMap { it }
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/set.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    setOf(setOf(1)).flatten()
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/simple.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatMap<caret> { it }
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/simple.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatten()
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/simple2.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatMap<caret>({ it })
+}

idea/testData/inspectionsLocal/collections/simplifiableCall/simple2.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    listOf(listOf(1)).flatten()
+}