Add "Convert to notNull delegate" quick fix for INAPPLICABLE_LATEINIT_MODIFIER

#KT-12515 Fixed

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/basic.kt

@@ -0,0 +1,3 @@
+// "Convert to notNull delegate" "true"
+// WITH_RUNTIME
+<caret>lateinit var x: Boolean

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/basic.kt.after

@@ -0,0 +1,5 @@
+import kotlin.properties.Delegates
+
+// "Convert to notNull delegate" "true"
+// WITH_RUNTIME
+var x by Delegates.notNull<Boolean>()

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/basic2.kt

@@ -0,0 +1,3 @@
+// "Convert to notNull delegate" "true"
+// WITH_RUNTIME
+<caret>lateinit var x: Int

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/basic2.kt.after

@@ -0,0 +1,5 @@
+import kotlin.properties.Delegates
+
+// "Convert to notNull delegate" "true"
+// WITH_RUNTIME
+var x by Delegates.notNull<Int>()

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/hasInitializer.kt

@@ -0,0 +1,8 @@
+// "Convert to notNull delegate" "false"
+// DISABLE-ERRORS
+// ACTION: Make internal
+// ACTION: Make private
+// ACTION: Remove 'lateinit' modifier
+// ACTION: Remove explicit type specification
+// ACTION: Remove initializer from property
+<caret>lateinit var x: Boolean = true

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/noType.kt

@@ -0,0 +1,7 @@
+// "Convert to notNull delegate" "false"
+// DISABLE-ERRORS
+// ACTION: Convert to nullable var
+// ACTION: Make internal
+// ACTION: Make private
+// ACTION: Specify type explicitly
+<caret>lateinit var x

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/notPrimitive.kt

@@ -0,0 +1,5 @@
+// "Convert to notNull delegate" "false"
+// ACTION: Convert to nullable var
+// ACTION: Make internal
+// ACTION: Make private
+<caret>lateinit var x: String

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/nullablePrimitive.kt

@@ -0,0 +1,7 @@
+// "Convert to notNull delegate" "false"
+// DISABLE-ERRORS
+// ACTION: Make internal
+// ACTION: Make not-nullable
+// ACTION: Make private
+// ACTION: Remove 'lateinit' modifier
+<caret>lateinit var x: Boolean?

idea/testData/quickfix/convertLateinitPropertyToNotNullDelegate/val.kt

@@ -0,0 +1,7 @@
+// "Convert to notNull delegate" "false"
+// DISABLE-ERRORS
+// ACTION: Change to var
+// ACTION: Make internal
+// ACTION: Make private
+// ACTION: Remove 'lateinit' modifier
+<caret>lateinit val x: Boolean