starlark: Export the RecordTypeMatcher for users in the public API

This fixes facebook/starlark-rust#120. Since
it allows users now to compare records from different files.

Author: PhilipMetzger

starlark-rust/starlark/src/values/types/record.rs

@@ -50,3 +50,4 @@ pub(crate) mod ty_record_type;
 
 pub use crate::values::record::instance::Record;
 pub use crate::values::record::record_type::RecordType;
+pub use crate::values::record::matcher::RecordTypeMatcher;

starlark-rust/starlark/src/values/types/record/matcher.rs

@@ -30,7 +30,7 @@ use crate::values::typing::type_compiled::matcher::TypeMatcherDyn;
 
 #[derive(Hash, Debug, Eq, PartialEq, Clone, Dupe, Allocative, Pagable)]
 #[pagable_typetag(TypeMatcherDyn)]
-pub(crate) struct RecordTypeMatcher {
+pub struct RecordTypeMatcher {
     pub(crate) id: TypeInstanceId,
 }