[NFC][clang] Add a release note for #embed (#97997)

Author: Fznamznon

clang/docs/ReleaseNotes.rst

@@ -348,6 +348,9 @@ C23 Feature Support
   but C23 added them to ``<float.h>`` in
   `WG14 N2848 <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2848.pdf>`_.
 
+- Clang now supports `N3017 <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3017.htm>`_
+  ``#embed`` - a scannable, tooling-friendly binary resource inclusion mechanism.
+
 Non-comprehensive list of changes in this release
 -------------------------------------------------