Accept .luau files (#552)

* accept .luau files

* Accept .luau in snapshot creation

* Update versioning and snapshots.

* fix versioning

* Run rustfmt

* Reduce repetition in extension detection

* Tidy build script change

Co-authored-by: Lucien Greathouse <me@lpghatguy.com>

build.rs

@@ -21,7 +21,7 @@ fn snapshot_from_fs_path(path: &Path) -> io::Result<VfsSnapshot> {
 
             // We can skip any TestEZ test files since they aren't necessary for
             // the plugin to run.
-            if file_name.ends_with(".spec.lua") {
+            if file_name.ends_with(".spec.lua") || file_name.ends_with(".spec.luau") {
                 continue;
             }