Create a Boot Entry on Install instead of relying on the UEFI Implementation.

Closes #403

mkosi.extra/live/usr/calamares/desktop/modules/shellprocess@uki.conf

@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 # SPDX-FileCopyrightText: 2023 Harald Sitter <sitter@kde.org>
+# SPDX-FileCopyrightText: 2025 Hadi Chokr <hadichokr@icloud.com>
 #
 # Set up for unified kernel image use
 ---
@@ -7,3 +8,7 @@ dontChroot: false
 timeout: 300
 script:
     - cp -rfv /usr/share/factory/boot/* /boot/
+
+    # Detect ESP and create systemd-boot EFI entry
+    - bootctl install
+