debian/daedalus-v4l2-dkms: new package — kernel module via DKMS

Mirror of arch/daedalus-v4l2-dkms into the Debian tree.
Architecture: all (source package — DKMS rebuilds per-kernel
at install time).  Same pin (f04d700, Phase 8.13 close).

Installs kernel/ source to /usr/src/daedalus_v4l2-<ver>/ with
generated dkms.conf.  postinst runs `dkms add` + `dkms
autoinstall` so the module builds against the running kernel's
headers automatically.  prerm runs `dkms remove --all`.

Same Makefile-include-path flattening as the Arch sibling:
copies daedalus_v4l2_proto.h into kernel/include/ and patches
the Makefile's -I path.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

debian/daedalus-v4l2-dkms/debian/copyright

@@ -0,0 +1,21 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: daedalus-v4l2
+Upstream-Contact: Markus Fritsche <fritsche.markus@gmail.com>
+Source: https://git.reauktion.de/reauktion/daedalus-v4l2
+
+Files: *
+Copyright: 2026 Markus Fritsche <fritsche.markus@gmail.com>
+License: GPL-2.0-or-later
+Comment:
+ Kernel module (loadable into the Linux kernel) — GPL-2.0-or-later.
+ The shared protocol header carries an additional Linux-syscall-note
+ exception so userspace inclusion is BSD-clean.
+
+License: GPL-2.0-or-later
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+ .
+ On Debian systems, the complete text of the GNU General Public
+ License v2 can be found in `/usr/share/common-licenses/GPL-2'.