feat: added loc badge

Author: ErikBjare

ci.pug

@@ -55,6 +55,7 @@ table(class="table dense")
     th Module
     th Issues
     th PRs
+    th LoC
 
   | {% for module in modules %}
   tr
@@ -70,6 +71,10 @@ table(class="table dense")
       a(href="https://github.com/ActivityWatch/{{module}}/pulls")
         img(alt="Open pull requests" src="https://img.shields.io/github/issues-pr/activitywatch/{{module}}.svg?style=flat-square")
 
+    td
+      a(href="#")
+        img(alt="Lines of code" src="https://img.shields.io/tokei/lines/github/activitywatch/{{module}}.svg") 
+
 
   tr
   | {% endfor %}