Adding debian version 0.4.1-1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

debian/control

@@ -0,0 +1,25 @@
+Source: tab-counter
+Section: web
+Priority: optional
+Maintainer: Daniel Baumann <daniel@debian.org>
+Build-Depends:
+ debhelper-compat (= 13),
+Rules-Requires-Root: no
+Standards-Version: 4.7.2
+Homepage: https://github.com/DaAwesomeP/tab-counter
+Vcs-Browser: https://forgejo.debian.net/mozilla/tab-counter
+Vcs-Git: https://forgejo.debian.net/mozilla/tab-counter
+
+Package: webext-tab-counter
+Section: web
+Architecture: all
+Depends:
+ ${misc:Depends},
+Recommends:
+ firefox (>= 57) | firefox-esr (>= 57),
+Enhances:
+ firefox,
+ firefox-esr,
+Description: show number of tabs open in a window
+ tab-counter is a extension which adds a button badge in the Firefox taskbar
+ that shows the number of tabs open in a window.