[Waybar] Add custom update manager

.config/waybar/config

@@ -1,7 +1,7 @@
 [{
     "spacing": 4, // Gaps between modules (4px)
     "modules-left": ["sway/workspaces", "sway/mode", "custom/media"],
-    "modules-right": ["pulseaudio", "memory", "cpu", "battery", "network", "clock", "tray"],
+    "modules-right": ["pulseaudio", "memory", "cpu", "battery", "network", "custom/pacman", "clock", "tray"],
     "memory": {
         "format": "\uf538 {used:0.1f}GiB",
     },
@@ -55,6 +55,17 @@
             "default": ["", "", ""]
         },
         "on-click": "pavucontrol"
+    },
+    "custom/pacman": {
+        "format": "{icon} {}",
+        "return-type": "json",
+        "escape": true,
+        "format-icons": {
+            "uptodate": "\uf00c",
+            "available": "\uf019"
+        },
+        "interval": 600,
+        "exec": "$HOME/.config/waybar/pacman.py '(?:^(?:linux-|sway|wl)|pipewire)' 2> /dev/null"
     }
 }]