feat(i18n): localize frontend components and add missing translations

- Replaced hardcoded UI strings with translation keys across frontend files
- Added and updated English(en) and Khmer(km) translation files for settings, notifications, and server components
- Improved localization and multi-language support throughout the frontend

application/src/components/docker/table/DockerEmptyState.tsx

@@ -1,20 +1,22 @@
 
 import { TableCell, TableRow } from "@/components/ui/table";
+import { useLanguage } from "@/contexts/LanguageContext";
 
 interface DockerEmptyStateProps {
   searchTerm: string;
 }
 
 export const DockerEmptyState = ({ searchTerm }: DockerEmptyStateProps) => {
+  const { t } = useLanguage();
   return (
     <TableRow>
       <TableCell colSpan={8} className="text-center py-12 text-muted-foreground">
         <div className="flex flex-col items-center gap-2">
           <div className="text-lg font-medium">
-            {searchTerm ? "No containers found" : "No containers running"}
+            {searchTerm ? t('noContainersFound', 'docker') : t('noContainersRunning', 'docker')}
           </div>
           <div className="text-sm">
-            {searchTerm ? "Try adjusting your search terms." : "Start some containers to see them here."}
+            {searchTerm ? t('tryAdjustSearch', 'docker') : t('startSomeContainers', 'docker')}
           </div>
         </div>
       </TableCell>