feat: expose highlight in rust binding (close #28)

Author: ghishadow

bindings/rust/lib.rs

@@ -35,7 +35,7 @@ pub const NODE_TYPES: &'static str = include_str!("../../src/node-types.json");
 
 // Uncomment these to include any queries that this grammar contains
 
-// pub const HIGHLIGHTS_QUERY: &'static str = include_str!("../../queries/highlights.scm");
+pub const HIGHLIGHTS_QUERY: &'static str = include_str!("../../queries/highlights.scm");
 // pub const INJECTIONS_QUERY: &'static str = include_str!("../../queries/injections.scm");
 // pub const LOCALS_QUERY: &'static str = include_str!("../../queries/locals.scm");
 // pub const TAGS_QUERY: &'static str = include_str!("../../queries/tags.scm");