Analyze Data Flow: Support val/var parameters

#KT-11994 In Progress

idea/testData/slicer/inflow/valParameter.kt

@@ -0,0 +1,9 @@
+// FLOW: IN
+
+open class A(val <caret>n: Int)
+
+class B : A(1)
+
+fun test() {
+    val z = A(2).n
+}

idea/testData/slicer/inflow/valParameter.results.txt

@@ -0,0 +1,3 @@
+3 open class A(val <bold>n: Int</bold>)
+5 	class B : A(<bold>1</bold>)
+8 	val z = A(<bold>2</bold>).n

idea/testData/slicer/inflow/varParameter.kt

@@ -0,0 +1,25 @@
+// FLOW: IN
+
+open class A(var <caret>n: Int) {
+    val x = n
+
+    val y: Int
+
+    init {
+        y = n
+
+        bar(n)
+    }
+
+    fun bar(m: Int) {
+        val z = n
+        n = 1
+    }
+}
+
+class B : A(1)
+
+fun test() {
+    val z = A(2).n
+    A(3).n = 2
+}

idea/testData/slicer/inflow/varParameter.results.txt

@@ -0,0 +1,5 @@
+3 open class A(var <bold>n: Int</bold>) {
+20 	class B : A(<bold>1</bold>)
+23 	val z = A(<bold>2</bold>).n
+24 	A(<bold>3</bold>).n = 2
+16 	n = <bold>1</bold>