Update distributedcloud-client for bullseye/Trixie

Aligned the package layout with the concurrent Debian packaging
conventions. Moved package files under 'debian/all/' to avoid
duplication across OS builds and removed legacy paths under 'debian/'.

Updated related build references to ensure compatibility across all
supported OS codenames.

Test-Plan:
PASS: master bullseye build
PASS: AIO-SX deploy

Story: 2011360
Task: 53415

Change-Id: If31027bef00fbb12cfd101064e7fc1d8fc5f8d40
Signed-off-by: sharang bhardwaj <sharang.bhardwaj@windriver.com>

debian_trixie_iso_image_std.inc

@@ -0,0 +1,4 @@
+# List of packages to be included/installed in ISO
+
+#distributedcloud-client
+distributedcloud-client-dcmanagerclient

debian_trixie_pkg_dirs_std

@@ -0,0 +1 @@
+distributedcloud-client