Commit c152b0ee for libheif

commit c152b0ee662494d63efd08cd9357c9a98bb1ee5f
Author: Dirk Farin <dirk.farin@gmail.com>
Date:   Thu Mar 26 19:16:17 2026 +0100

    add description of --mime-item-name to heif-enc help page

diff --git a/examples/heif_enc.cc b/examples/heif_enc.cc
index bb4b486b..6beacbaf 100644
--- a/examples/heif_enc.cc
+++ b/examples/heif_enc.cc
@@ -482,6 +482,7 @@ void show_help(const char* argv0)
 #if HEIF_ENABLE_EXPERIMENTAL_FEATURES
             << "      --add-mime-item TYPE       add a mime item of the specified content type (experimental)\n"
             << "      --mime-item-file FILE      use the specified FILE as the data to put into the mime item (experimental)\n"
+            << "      --mime-item-name NAME      assign the name to the embedded item (experimental)\n"
             << "      --turtle FILENAME          read Turtle (RDF) file and assign GIMI content IDs to tiles (experimental)\n"
             << "      --embed-turtle             also embed the Turtle file as metadata item in the HEIF (experimental)\n"
 #endif