Intentions: Implement intention which converts object literal to class

#KT-15056 Fixed

idea/testData/intentions/convertObjectLiteralToClass/.intention

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.intentions.ConvertObjectLiteralToClassIntention

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralNoCapture.kt

@@ -0,0 +1,7 @@
+open class K
+
+fun foo(n: Int) {
+    val x = <caret>object : K() {
+        fun bar() = 1
+    }
+}

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralNoCapture.kt.after

@@ -0,0 +1,9 @@
+open class K
+
+fun foo(n: Int) {
+    val x = <caret>O()
+}
+
+class O : K() {
+    fun bar() = 1
+}

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralNoSupers.kt

@@ -0,0 +1,5 @@
+fun foo(n: Int) {
+    val x = <caret>object {
+        fun bar() = n
+    }
+}

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralNoSupers.kt.after

@@ -0,0 +1,7 @@
+fun foo(n: Int) {
+    val x = <caret>O(n)
+}
+
+class O(private val n: Int) {
+    fun bar() = n
+}

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralWithCapture.kt

@@ -0,0 +1,7 @@
+open class K
+
+fun foo(n: Int) {
+    val x = <caret>object : K() {
+        fun bar() = n
+    }
+}

idea/testData/intentions/convertObjectLiteralToClass/objectLiteralWithCapture.kt.after

@@ -0,0 +1,9 @@
+open class K
+
+fun foo(n: Int) {
+    val x = <caret>O(n)
+}
+
+class O(private val n: Int) : K() {
+    fun bar() = n
+}