[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/variance/Visibility.fir.kt

@@ -0,0 +1,20 @@
+interface Test<in I, out O> {
+    val internal_val: I
+    public val public_val: I
+    protected val protected_val: I
+    private val private_val: I
+
+    var interlan_private_set: O
+        private set
+    public var public_private_set: O
+        private set
+    protected var protected_private_set: O
+        private set
+    private var private_private_set: O
+        private set
+
+    fun internal_fun(i: O) : I
+    public fun public_fun(i: O) : I
+    protected fun protected_fun(i: O) : I
+    private fun private_fun(i: O) : I
+}