Added okular as default pdf, full texlive environment for resumes

modules/application-groups/productivity.nix

@@ -2,5 +2,7 @@
 {
   environment.systemPackages = with pkgs; [
     obsidian
+    kdePackages.okular
+    texliveFull
   ];
 }

users/caperren/caperren.nix

@@ -88,6 +88,13 @@ in
       GTK_THEME = "Adwaita-dark";
     };
 
+    xdg.mimeApps = {
+      enable = true;
+      defaultApplications = {
+        "application/pdf" = [ "okularApplication_pdf.desktop" ];
+      };
+    };
+
     xresources.properties = {
       "Xft.font" = "JetBrains Mono";
     };