feat(bar): unify popup handling and improve layouts

- Unified popup handling in ClockWidget, Resource, BatteryPopup, and WeatherBar
  using PanelWindow + LazyLoader for consistent positioning and compositor animations.
- Replaced plain text with ColumnLayout and RowLayout where possible, adding
  MaterialSymbol icons for improved visual consistency with the overall desktop style.
- Added Translation.tr() for bilingual (Chinese/English) support to avoid hardcoded strings.
- Based on improvements from PR #1771 (mine) and PR #1773 (by @finjener), merged and refined into a more polished and practical solution.

.config/quickshell/translations/en_US.json

@@ -316,5 +316,24 @@
   "Time to empty:": "Time to empty:",
   "Fully charged": "Fully charged",
   "Charging:": "Charging:",
-  "Discharging:": "Discharging:"
+  "Discharging:": "Discharging:",
+  "Uptime:": "Uptime:",
+  "Upcoming Tasks:": "Upcoming Tasks:",
+  "No pending tasks": "No pending tasks",
+  "... and %1 more": "... and %1 more",
+  "Memory Usage": "Memory Usage",
+  "Used:": "Used:",
+  "Free:": "Free:",
+  "Total:": "Total:",
+  "Usage:": "Usage:",
+  "Swap Usage": "Swap Usage",
+  "Swap:": "Swap:",
+  "Not configured": "Not configured",
+  "CPU Usage": "CPU Usage",
+  "Current:": "Current:",
+  "Load:": "Load:",
+  "High": "High",
+  "Medium": "Medium",
+  "Low": "Low",
+  "System Resource": "System Resource"
 }