feat(php): add highlights for scoped_property_access

queries/php_only/highlights.scm

@@ -249,6 +249,16 @@
   ]
   (name) @constant)
 
+(scoped_property_access_expression
+  scope: [
+    (name) @type
+    (qualified_name
+      (name) @type)
+  ])
+
+(scoped_property_access_expression
+  name: (variable_name) @variable.member)
+
 (trait_declaration
   name: (name) @type)
 

tests/query/highlights/php/variables.php

@@ -23,5 +23,8 @@ class A {
 //         ^^^ @variable.member
     $this->foo(a: 5);
 //             ^ @variable.parameter
+    A::$foo::$bar;
+//      ^^^ @variable.member
+//            ^^^ @variable.member
   }
 }