Revert "Drop unused meta-clang"

This reverts commit 353b80c.

Author: jpnurmi

README.md

@@ -10,6 +10,10 @@
     branch: kirkstone
     revision: HEAD
 
+    URI: https://github.com/kraj/meta-clang.git
+    branch: kirkstone
+    revision: HEAD
+
     URI: https://code.qt.io/yocto/meta-qt6.git
     branch: 6.6
     revision: HEAD

kas-jpos.yaml

@@ -19,6 +19,9 @@ repos:
     path: layers/meta-openembedded
     layers:
       meta-oe:
+  meta-clang:
+    url: https://github.com/kraj/meta-clang.git
+    path: layers/meta-clang
   meta-qt6:
     url: https://code.qt.io/yocto/meta-qt6.git
     branch: "6.6"