feat: gix free index info now lists EOIE and IEOT extensions.

Author: Byron

crate-status.md

@@ -628,6 +628,7 @@ The git staging area.
   * [x] V2 - the default, including long-paths support
   * [x] V3 - extended flags
   * [x] V4 - delta-compression for paths
+  * [ ] TODO(perf): multi-threaded implementation should boost performance, spends most time in storing paths, has barely any benefit right now.
   * optional threading
     * [x] concurrent loading of index extensions
     * [x] threaded entry reading

gitoxide-core/src/index/information.rs

@@ -101,6 +101,12 @@ mod serde_only {
                     if f.fs_monitor().is_some() {
                         names.push("fs-monitor (FSMN)");
                     };
+                    if f.had_offset_table() {
+                        names.push("offset-table (IEOT)")
+                    }
+                    if f.had_end_of_index_marker() {
+                        names.push("end-of-index (EOIE)")
+                    }
                     Extensions { names, tree }
                 },
                 entries: {