Uncluttered custom modeline to show page numbers

Add rules to handle windows that should not be considered as popups.

modules/tools/pdf/+modeline.el

@@ -0,0 +1,10 @@
+;;; tools/pdf/+modeline.el -*- lexical-binding: t; -*-
+
+
+(def-modeline-segment! +pdf-tools-pages
+  "Current and total page indicator for PDF documents."
+  (format " P %d/%d" (pdf-view-current-page) (pdf-cache-number-of-pages)))
+
+(def-modeline! pdf-tools-modeline
+  (bar matches " " buffer-info  +pdf-tools-pages)
+  (major-mode vcs))