Debian: Clean up copyright

Also, add info for debian/* files

debian/copyright

@@ -5,61 +5,15 @@ Source: <url://example.com>
 #
 # Please double check copyright with the licensecheck(1) command.
 
-Files:     .clang-format
-           .clang-tidy
-           .github/workflows/nix-build.yaml
-           .gitignore
-           CMakeLists.txt
-           Makefile
-           README.md
-           flake.lock
-           flake.nix
-           nix/default.nix
-           src/Hyprpaper.cpp
-           src/Hyprpaper.hpp
-           src/config/ConfigManager.cpp
-           src/config/ConfigManager.hpp
-           src/debug/Log.cpp
-           src/debug/Log.hpp
-           src/defines.hpp
-           src/events/Events.cpp
-           src/events/Events.hpp
-           src/helpers/Jpeg.cpp
-           src/helpers/Jpeg.hpp
-           src/helpers/MiscFunctions.cpp
-           src/helpers/MiscFunctions.hpp
-           src/helpers/Monitor.hpp
-           src/helpers/PoolBuffer.hpp
-           src/helpers/Vector2D.cpp
-           src/helpers/Vector2D.hpp
-           src/helpers/Webp.cpp
-           src/helpers/Webp.hpp
-           src/includes.hpp
-           src/ipc/Socket.cpp
-           src/ipc/Socket.hpp
-           src/main.cpp
-           src/render/LayerSurface.cpp
-           src/render/LayerSurface.hpp
-           src/render/WallpaperTarget.cpp
-           src/render/WallpaperTarget.hpp
-Copyright: __NO_COPYRIGHT_NOR_LICENSE__
-License:   __NO_COPYRIGHT_NOR_LICENSE__
+Files:     *
+Copyright: 2022 Hypr Development
+License:   BSD-3-Clause
 
-#----------------------------------------------------------------------------
-# xml and html files (skipped):
-#         protocols/wlr-layer-shell-unstable-v1.xml
+Files:     debian/*
+Copyright: 2024 Alan M Varghese <alan@digistom.in>
+License:   BSD-3-Clause
 
-#----------------------------------------------------------------------------
-# Files marked as NO_LICENSE_TEXT_FOUND may be covered by the following
-# license/copyright files.
-
-#----------------------------------------------------------------------------
-# License file: LICENSE
- BSD 3-Clause License
- .
- Copyright (c) 2022, Hypr Development
- All rights reserved.
- .
+License:   BSD-3-Clause
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  .