emacs: add telega mode

pkgsets/emacs/telega.nix

@@ -0,0 +1,15 @@
+{ config, lib, ... }:
+
+with lib;
+
+mkIf (elem "emacs::telega" config.machine.pkgs) {
+  programs.emacs.init.usePackage.telegram = {
+    enable = true;
+    defer = true;
+    package = epkgs: [ epkgs.telega epkgs.visual-fill-column ];
+    command = [ "telega" ];
+    config = ''
+      (telega-alert-mode 1)
+    '';
+  };
+}