Add upstream metadata

debian/upstream/metadata

@@ -1,16 +1,4 @@
-#
-# DEP-12: Per-package machine-readable metadata about Upstream
-#        Please check * https://dep-team.pages.debian.net/deps/dep12/
-#                     * https://wiki.debian.org/UpstreamMetadata
-Reference:
-  Author: <please use full names and separate multiple author by the keyword "and">
-  Title:
-  Journal:
-  Year:
-  Volume:
-  Number:
-  Pages:
-  DOI:
-  PMID:
-  URL:
-  eprint:
+Bug-Database: https://github.com/hyprwm/hyprpaper/issues
+Bug-Submit: https://github.com/hyprwm/hyprpaper/issues/new
+Repository: https://github.com/hyprwm/hyprpaper
+Repository-Browse: https://github.com/hyprwm/hyprpaper