added monitor layout icon to waybar when external monitors are connected

hyprland/.local/bin/monitor-status.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# monitor-status: waybar module for external display layout.
+#
+# Emits a JSON update on stdout every couple of seconds so the module appears
+# as soon as an external (non-eDP/HEADLESS) monitor is detected and collapses
+# again when it is disconnected. Clicking the icon opens monique to manage the
+# display layout.
+#
+# Outputs (return-type json):
+#   connected: { "text": "󰍹", "class": "active", "tooltip": "<monitor list>" }
+#   otherwise: { "text": "", "class": "hidden", "tooltip": "" }
+
+set -uo pipefail
+
+POLL_SECONDS=2
+
+emit() {
+  local out_json
+  out_json="$(hyprctl monitors -j 2>/dev/null)" || {
+    echo '{"text":"","class":"hidden","tooltip":""}'
+    return
+  }
+  jq -c '
+    [.[] | select((.name | test("^(eDP|HEADLESS)-")) | not)] as $ext |
+    if ($ext | length) == 0 then
+      { text: "", class: "hidden", tooltip: "" }
+    else
+      { text: "󰍹",
+        class: "active",
+        tooltip: (($ext | map("\(.description)  \(.width)x\(.height) @ \(.refreshRate | floor) Hz") | join("\n"))) }
+    end
+  ' <<<"$out_json" 2>/dev/null || echo '{"text":"","class":"hidden","tooltip":""}'
+}
+
+while true; do
+  emit
+  sleep "$POLL_SECONDS"
+done