refactor: seperate highlevel into 2 individual files

wfassoc-exec/src/runner.rs

@@ -65,7 +65,7 @@ fn stringified_exts_to_indices(
 
     // If star is present alone, return fixed list from zero to the maximum ext index.
     if has_star {
-        return Ok((0..program.get_ext_count()).collect());
+        return Ok((0..program.exts_len()).collect());
     }
 
     // Convert each extension name to index using program.find_ext()
@@ -138,7 +138,7 @@ fn run_ext_list(
 ) -> Result<()> {
     // Fetch info
     let mut ext_list: HashMap<String, Option<String>> = HashMap::new();
-    for index in 0..program.get_ext_count() {
+    for index in 0..program.exts_len() {
         let ext = program.get_ext(index)?;
         let status = program.query_ext(view, index)?;
         ext_list.insert(ext.dotted_inner(), status.map(|s| s.get_name().to_string()));