Consider module as function call for highlighting

Their semantic is closer to a function call (like i.e: Bazel rules)
rather than a module/namespace.

Similarly for their properties, which are more like parameters than
members.

test/highlight/select.bp

@@ -11,5 +11,5 @@ select = 42
 // Or module property
 foo {
     select: 42,
-    // <- variable.member
+    // <- variable.parameter
 }