FIR checker: introduce member property checker

compiler/fir/analysis-tests/testData/resolve/openInInterface.kt

@@ -3,11 +3,11 @@ interface Some {
     open fun bar() {}
 
     open val x: Int
-    open val y = 1
+    open val y = <!PROPERTY_INITIALIZER_IN_INTERFACE!>1<!>
     open val z get() = 1
 
     open var xx: Int
-    open var yy = 1
+    open var yy = <!PROPERTY_INITIALIZER_IN_INTERFACE!>1<!>
     open var zz: Int
         set(value) {
             field = value